Suk-Joon Chang

Ajou University, Seoul, Seoul, South Korea

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Publications (33)67.49 Total impact

  • Article: Survival Impact of Complete Cytoreduction to No Gross Residual Disease for Advanced-Stage Ovarian Cancer: A Meta-Analysis.
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    ABSTRACT: OBJECTIVE: To quantify the impact of complete cytoreduction to no gross residual disease on overall survival among patients with advanced-stage ovarian cancer treated during the platinum-taxane era. METHODS: PubMed and Cochrane Library databases were searched for all articles on primary cytoreductive surgery for advanced-stage ovarian cancer published from 1/1996-7/2011. A total of 18 relevant studies (13,257 patients) were identified for analysis. Simple and multiple linear regression analyses, with weighted correlation calculations, were used to assess the effect on median survival time of clinical and treatment-related factors. RESULTS: The mean weighted median overall survival time for all cohorts was 44.4months (range, 27.6-66.9months). Simple linear regression analysis revealed that residual disease, stage IV disease, and use of intraperitoneal chemotherapy were significantly associated with median survival time. After controlling for other factors on multiple linear regression analysis, each 10% increase in the proportion of patients undergoing complete cytoreduction to no gross residual disease was associated with a significant and independent 2.3-month increase (95%CI=0.6-4.0, p=0.011) in cohort median survival compared to a 1.8-month increase (95%CI=0.6-3.0, p=0.004) in cohort median survival for optimal cytoreduction (residual disease ≤1cm). Each10% increase in the proportion of patients receiving intraperitoneal chemotherapy was associated with a significant and independent 3.9-month increase (95%CI=1.1-6.8 p=0.008) in median cohort survival time. CONCLUSIONS: For advanced-stage ovarian cancer treated during the platinum-taxane era, the proportion of patients left with no gross residual disease and receiving intraperitoneal chemotherapy are independently significant factors associated with the most favorable cohort survival time.
    Gynecologic Oncology 06/2013; · 3.89 Impact Factor
  • Article: Analysis of para-aortic lymphadenectomy up to the level of the renal vessels in apparent early-stage ovarian cancer.
    Suk-Joon Chang, Robert E Bristow, Hee-Sug Ryu
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    ABSTRACT: The aim of this study was to evaluate the impact of para-aortic lymphadenectomy up to the renal vessels on the accurate staging in ovarian cancer patients presumed preoperatively to be confined to the ovary. We retrospectively analyzed data on 124 patients with primary epithelial ovarian cancer who were preoperatively thought to have tumor confined to the ovary and underwent primary staging surgery. The distribution of lymph node metastasis and various risk factors for nodal involvement were investigated. SURGICAL STAGING YIELDED: 87 (70.2%) patients had International Federation of Gynecology and Obstetrics (FIGO) stage I disease and 37 (29.8%) patients had stage II-III disease: 4 IIA, 6 IIB, 9 IIC, 1 IIIA, and 17 IIIC. Eighty-six patients had pelvic lymphadenectomy only and 69 had pelvic and para-aortic lymphadenectomy. Lymph node metastases were found in 17 (24.6%) of 69 patients; 5 (7.2%) patients had lymph node metastasis in the pelvic lymph nodes only, 8 (11.6%) in the para-aortic lymph nodes only, and 4 (5.8%) in both pelvic and para-aortic lymph nodes. Six (8.7%) patients had lymph node metastasis in the para-aortic lymph node above the level of the inferior mesenteric artery. On multivariate analysis, grade 3 tumor (p=0.01) and positive cytology (p=0.03) were independent predictors for lymph node metastasis. A substantial number of patients with apparently early ovarian cancer had upstaged disease. Of patients who underwent lymphadenectomy, some patients had lymph node metastasis above the level of the inferior mesenteric artery. Para-aortic lymphadenectomy up to the renal vessels may detect occult metastasis and be of help in tailoring appropriate adjuvant treatment as well as giving useful information about the prognosis.
    Journal of Gynecologic Oncology 01/2013; 24(1):29-36. · 1.49 Impact Factor
  • Article: Comparison of concurrent chemoradiation therapy with weekly cisplatin versus monthly fluorouracil plus cisplatin in FIGO stage IIB-IVA cervical cancer.
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    ABSTRACT: Concurrent chemoradiation therapy (CCRT) is the standard treatment for locally advanced cervical cancer. Although the optimal chemotherapeutic regimen is not yet defined, previous randomized trials have demonstrated that 5-fluorouracil (5-FU) plus cisplatin every 3 weeks and weekly cisplatin are the most popular regimens. The purpose of this study was to compare the outcomes of weekly CCRT with cisplatin and monthly CCRT with 5-FU plus cisplatin for locally advanced cervical cancer. We retrospectively reviewed data from 255 patients with FIGO stage IIB-IVA cervical cancer. Patients were classified into two CCRT groups according to the concurrent chemotherapy: weekly CCRT group, consisted of CCRT with weekly cisplatin for six cycles; and monthly CCRT group, consisted of CCRT with cisplatin and 5-FU every 4 weeks for two cycles followed by additional consolidation chemotherapy for two cycles with the same regimen. Of 255 patients, 152 (59.6%) patients received weekly CCRT and 103 (40.4%) received monthly CCRT. The mean follow-up period was 39 months (range, 1 to 186 months). Planned CCRT was given to 130 (85.5%) patients in weekly CCRT group and 84 (81.6%) patients in monthly CCRT group, respectively. Severe adverse effects were more common in the monthly CCRT group than in the weekly CCRT group. There were no statistically significant differences in progression-free survival and overall survival between the two groups (p=0.715 and p=0.237). Both weekly CCRT and monthly CCRT seem to have similar efficacy for patients with locally advanced cervical cancer, but the weekly cisplatin is better tolerated.
    Journal of Gynecologic Oncology 10/2012; 23(4):235-41. · 1.49 Impact Factor
  • Article: Impact of Complete Cytoreduction Leaving No Gross Residual Disease Associated with Radical Cytoreductive Surgical Procedures on Survival in Advanced Ovarian Cancer.
    Suk-Joon Chang, Robert E Bristow, Hee-Sug Ryu
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    ABSTRACT: BACKGROUND: To analyze the impact of radical cytoreductive surgery-as part of primary tumor debulking-on the amount of residual tumor and survival in patients with advanced ovarian cancer and to evaluate the prognostic significance of no gross residual disease (RD) after surgery. METHODS: Medical records of 203 patients with International Federation of Gynecology and Obstetrics (FIGO) stage IIIC-IV ovarian cancer were reviewed. All patients underwent primary cytoreductive surgery followed by taxane- and platinum-based chemotherapy. Various clinicopathologic characteristics were collected. RESULTS: Of 203 patients, 119 patients underwent simple surgery, while radical surgery was performed in 84 patients. Advanced age (hazard ratio [HR] 1.04, 95 % confidence interval [CI] 1.02-1.06, P < 0.01), FIGO stage IV disease (HR 3.61, 95 % CI 1.48-8.83, P < 0.01), and grossly visible RD (HR 3.24, 95 % CI 1.90-5.53, P < 0.01) were identified as significant factors associated with poor prognosis in the entire cohort of 203 patients. Radical surgery (HR 0.56, 95 % CI 0.37-0.87, P = 0.01) was associated with improved survival. In the subgroup of patients with stage IIIC disease with peritoneal carcinomatosis, independent prognostic factors were advanced age (HR 1.04, 95 % CI 1.01-1.06, P = 0.01), radical surgery (HR 0.58, 95 % CI 0.35-0.96, P = 0.03), and grossly visible RD (HR 2.86, 95 % CI 1.55-5.30, P < 0.01). Patients with no gross RD had the longest overall survival (86 months) compared with RD 0.1-1 cm (46 months) and RD >1.0 cm (37 months) (P < 0.01). CONCLUSIONS: No gross RD is associated with improved overall survival, and radical surgery was effective for achieving no gross RD.
    Annals of Surgical Oncology 07/2012; · 4.17 Impact Factor
  • Article: Prognostic significance of systematic lymphadenectomy as part of primary debulking surgery in patients with advanced ovarian cancer.
    Suk-Joon Chang, Robert E Bristow, Hee-Sug Ryu
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    ABSTRACT: The objective of this study was to evaluate the impact of systematic pelvic and para-aortic lymphadenectomy on survival in patients with advanced ovarian cancer. We retrospectively analyzed the data of 189 consecutive patients with FIGO stage IIIC ovarian cancer between 2000 and 2011, who underwent primary cytoreductive surgery followed by platinum- and taxane-based chemotherapy. All patients were classified into two groups - patients who underwent systematic pelvic and para-aortic lymphadenectomy and those who did not. Progression-free (PFS) and overall survival (OS) times were analyzed using Kaplan-Meier method and Cox proportional hazards model. Patients who underwent systematic lymphadenectomy had significantly improved PFS (22 versus 9 months, p<0.01) and OS (66 versus 40 months, p<0.01). In patients with no gross residual disease (NGR) or residual disease 0.1-1cm (GR-1), the median OS time of those who had lymphadenectomy was significantly longer than those who did not (86 versus 46 months, p=0.02). However, in patients with residual disease >1cm (GR-B), there was no significant difference in OS according to lymphadenectomy (39 versus 40 months, p=0.50). Among patients with NGR, the median OS time of those who underwent systematic lymphadenectomy was significantly longer than those who did not undergo lymphadenectomy (not yet reached [>96] and 56 months, p<0.01). No significant difference of OS between patients with and without lymphadenectomy was observed in the subgroup of patients with GR-1 (50 versus 38 months, p=0.44). The performance of lymphadenectomy was a statistically significant and independent predictor of improved OS in addition to the status of residual disease and the performance of radical cytoreductive procedures (hazard ratio, 0.34; [95% CI, 0.23-0.52]; p<0.01). Systematic lymphadenectomy may have a therapeutic value and be significantly associated with improved survival in stage IIIC ovarian cancer patients with grossly no visible residual disease.
    Gynecologic Oncology 05/2012; 126(3):381-6. · 3.89 Impact Factor
  • Article: Comprehensive staging surgery including complete pelvic and para-aortic lymphadenectomy followed by adjuvant vaginal brachytherapy improves survival rates for intermediate-risk endometrial cancer patients.
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    ABSTRACT: To investigate the survival of patients with intermediate-risk endometrial cancer treated with comprehensive staging surgery including complete pelvic and para-aortic lymphadenectomy and adjuvant vaginal brachytherapy (VBT). Between January 2000 and December 2009, we retrospectively reviewed the medical records of 156 patients who underwent comprehensive surgical staging consisting of total hysterectomy, adnexectomy, peritoneal cytology, and complete pelvic/para-aortic lymphadenectomy. There were 122 low-risk and 34 intermediate-risk patients, and intermediate-risk patients received adjuvant VBT. During the follow-up period, 7 (4.5%) of the 156 patients developed recurrent disease: 3 (2.5%) of the 122 low-risk and 4 (11.8%) of the 34 intermediate-risk patients. Among the 7 patients with recurrent disease, only 1 intermediate-risk patient died of disease and 6 stayed alive for the rest of the follow-up period. Disease-free survival at 5 years was 95.7% in the low-risk patients and 81.6% in the intermediate-risk patients, and this difference was statistically significant (p = 0.009). There was no statistically significant difference in overall survival at 5 years between the two groups (100% in low-risk patients vs. 96.7% in intermediate-risk patients, p = 0.061). Overall, grade 3 toxicities were seen in 1 (2.9%) patient. Comprehensive staging surgery including complete pelvic and para-aortic lymphadenectomy followed by adjuvant VBT improves survival rates for intermediate-risk endometrial cancer patients, which are comparable with those of low-risk patients.
    Gynecologic and Obstetric Investigation 05/2012; 74(1):68-75. · 1.28 Impact Factor
  • Article: Uterine artery-preserving laparoscopic radical trachelectomy for early cervical cancer: technical aspects.
    Suk-Joon Chang, Hee-Sug Ryu, Joo-Hyun Nam
    Gynecologic Oncology 05/2012; 126(2):277-8. · 3.89 Impact Factor
  • Article: Laparoscopic para-aortic lymphadenectomy in endometrial cancer patient with left-sided inferior vena cava.
    Suk-Joon Chang, Hee-Sug Ryu
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    ABSTRACT: We present the unique case of a 55-year old endometrial cancer patient with a left-sided inferior vena cava (IVC) who underwent laparoscopic staging procedures with total hysterectomy, bilateral salpingo-oophorectomy, bilateral pelvic lymphadenectomy, and para-aortic lymphadenectomy. On preoperative evaluation, endometrial biopsy revealed grade 3endometrioid adenocarcinoma, and magnetic resonance imaging (MRI) showed uterine corpus tumor with deep (≥ 50%) myometrial invasion and no suspicious extrapelvic metastases. After removal of the uterus and bilateral adnexae, retroperitoneal lymphadenectomy was performed. During para-aortic lymphadenectomy, a left-sided IVC was observed. Para-aortic lymphadenectomy was performed using conventional laparoscopic electrosurgical instruments without complications. The postoperative recovery was uneventful. The patient was found to have FIGO stage IB disease, and received adjuvant radiation therapy. The IVC is formed through a very complicated embryologic process - selective development, anastomosis, and regression of posterior cardinal, subcardinal, and supracardinal veins - between 5-8th gestational weeks, and several congenital anomalies of the IVC can occur [1]. The left-sided IVC results from persistence of the left supracardinal vein with regression of the right supracardinal vein, and its incidence is 0.2 - 0.5% [1,2]. The left-sided IVC is usually asymptomatic and mostly an incidental finding [2]. Multiple renal veins, gonadal vein anomaly, and IVC duplication are common anomaly associated with the left-sided IVC. In our case, no anomalies were found. In the preoperative imaging studies, the left-sided IVC may be misinterpreted as para-aortic nodal disease such as cancer metastasis or lymphadenitis, retroperitoneal cyst, or dilated uteter [2,3]. The preoperative MRI of our case showed the left-sided IVC, but the radiologist missed it. The clinical significance of this anomaly is the potential risk of vascular injury during surgery [3]. Endometrial cancer is a surgically staged disease, and para-aortic lymphadenectomy is performed as part of systematic surgical staging procedures. The operating surgeon must consider the possibility of IVC anomalies and take a cautious approach to avoid iatrogenic surgical injury due to misidentification of these findings.
    Gynecologic Oncology 04/2012; 126(1):147-8. · 3.89 Impact Factor
  • Article: A model for prediction of parametrial involvement and feasibility of less radical resection of parametrium in patients with FIGO stage IB1 cervical cancer.
    Suk-Joon Chang, Robert E Bristow, Hee-Sug Ryu
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    ABSTRACT: The objective of this study was to evaluate the potential risk factors associated with parametrial invasion and to identify preoperatively a subgroup of patients at low risk for parametrial involvement who could be appropriate candidates for less radical surgery in FIGO stage IB1 cervical cancer. We retrospectively reviewed the medical records of 317 FIGO stage IB1 cervical cancer patients undergoing class III radical hysterectomy and bilateral pelvic lymphadenectomy. Clinocopathologic factors associated with parametrial invasion were analyzed and the risk criteria predicting parametrial involvement were calculated using a logistic regression model. Of 317 patients, 17 patients (5.4%) had parametrial involvement. Tumor size >3 cm (OR, 3.80; [95% CI, 1.19-12.06]; p=0.02) and pelvic lymph node metastasis (OR, 3.02; [95% CI, 1.04-8.79]; p=0.04) were independent pathologic factors for parametrial invasion on multivariate analysis. Significant preoperative factors associated with parametrial involvement were tumor size >3 cm (OR, 4.29; [95% CI, 1.43-12.89]; p<0.01) and serum SCC Ag level >1.40 ng/mL (OR, 3.27; [95% CI, 1.11-9.69]; p=0.03). We identified 185 low-risk (tumor size ≤ 3 cm and SCC ≤ 1.4 ng/mL) and 132 high-risk (tumor size>3 cm and/or SCC>1.4 ng/mL) patients. The rates of parametrial involvement in low- and high-risk patients were 1.1% and 11.4%, respectively (p<0.01). In this dataset, a model using tumor size and SCC Ag level is highly predictive of parametrial involvement in patients with stage IB1 cervical cancer and may identify candidates for less radical parametrial resection.
    Gynecologic Oncology 04/2012; 126(1):82-6. · 3.89 Impact Factor
  • Article: Safe criteria for less radical trachelectomy in patients with early-stage cervical cancer: a multicenter clinicopathologic study.
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    ABSTRACT: To determine the safe criteria for less radical trachelectomy to treat patients with early-stage cervical cancer. We reviewed medical records and pathologic slides of 65 patients with International Federation of Gynecology and Obstetrics (FIGO) stage IA-IB1 cervical cancer. The safe criteria for less radical trachelectomy were determined by using three factors such as tumor size ≤ 1 cm, stromal invasion ≤ 5 mm, and no lymphovascular space invasion (LVSI) for minimizing parametrial involvement, lymph node metastasis (LNM), and the need of adjuvant radiotherapy. The diagnostic values were investigated by calculating specificity, negative predictive value for no parametrial involvement, no LNM, and no need of adjuvant radiotherapy. The median age was 32 years (range 22-44 years), and the median duration of follow-up was 26 months (range 2-103 months). Among seven single or combined factors for the safe criteria, (1) tumor size ≤ 1 cm, (2) tumor size ≤ 1 cm and stromal invasion ≤ 5 mm, (3) tumor size ≤ 1 cm and no LVSI, (4) tumor size ≤ 1 cm, stromal invasion ≤ 5 mm, and no LVSI did not show parametrial involvement, LNM, and the need of adjuvant radiotherapy. In particular, tumor size ≤ 1 cm showed the highest specificity (28.1-29.5%) and negative predictive value (100%). In spite of no difference in progression-free survival (PFS) between tumor size ≤ 1 cm and >1 cm (P = 0.22), tumor size ≤ 1 cm showed better PFS without disease recurrence than tumor size >1 cm (2-year PFS, 100% vs. 90%). Less radical trachelectomy may be safe in patients with early-stage cervical cancer who have tumor size ≤ 1 cm.
    Annals of Surgical Oncology 12/2011; 19(6):1973-9. · 4.17 Impact Factor
  • Article: Lymph-vascular space invasion as a significant risk factor for isolated para-aortic lymph node metastasis in endometrial cancer: a study of 203 consecutive patients.
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    ABSTRACT: The purpose of this study was to investigate various pathologic risk factors associated with para-aortic lymph node metastasis (LNM) in surgically staged patients with endometrial cancer. We performed a retrospective analysis of 203 consecutive patients with endometrial cancer who were surgically staged from 2000 to 2009. The association among the various pathologic variables for para-aortic LNM was determined with univariate and multivariate analyses. Of 203 patients, 29 patients (14.3%) had LNM. Also, 10 patients (4.9%) had only pelvic LNM, 14 (6.9%) had both pelvic and para-aortic LNM, and 5 (2.5%) had para-aortic LNM without pelvic LN involvements. Histologic type (P = .001), tumor grade (P < .001), tumor size (P = .003), depth of myometrial invasion (P < .001), cervical invasion (P < .001), parametrial invasion (P = .002), lymph-vascular space invasion (LVSI) (P < .001), serosal/adnexal invasion (P < .001), positive cytology (P = .002), peritoneal seeding (P < .001), and pelvic LNM (P < .001) were significant pathologic factors for para-aortic LNM. On multivariate analysis, cervical invasion (P = .032), LVSI (P = .018), and positive pelvic LNs (P = .002) were independent factors for para-aortic LNM. With regard to isolated para-aortic LNM, tumor grade (P = .017) and LVSI (P = .002) were significant factors for LN involvements. On multivariate analysis, LVSI (P = .004) was the only significant independent factor. LVSI correlates significantly with the risk of isolated para-aortic LNM in endometrial cancer patients.
    Annals of Surgical Oncology 01/2011; 18(1):58-64. · 4.17 Impact Factor
  • Article: Treatment patterns and outcomes in bulky stage IB2 cervical cancer patients: a single institution's experience over 14 years.
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    ABSTRACT: The aim of this study was to assess various treatment options in stage IB2 cervical cancer patients. Between January 1995 and May 2007, 63 patients with stage IB2 were treated by radical hysterectomy (n = 28), primary concurrent chemoradiation (CCRT, n = 16) or radiation therapy (RT, n = 19). Disease-free survival (DFS) and overall survival (OS) were compared between these treatment modalities. The 3-year DFS of the surgical approach group was 67.5% compared to 70.3% of the primary RT/CCRT group (p = 0.603). The 5-year OS of all patients was 75.9%. The 5-year OS of the surgical approach group was 81.6% compared to 76.2% of the primary RT/CCRT group (p = 0.578). Twelve (42.8%) of 28 surgically treated patients had high-risk pathologic factors. Out of 20 premenopausal patients who underwent the surgical approach, ovarian preservation was possible in 13 patients without adjuvant CCRT. Of these 13 patients, 7 patients did not experience disease recurrence and continued normal ovarian function. Both radical hysterectomy and primary RT/CCRT are effective treatment options in IB2 cervical cancer. In addition, the surgical approach can be considered for preserving ovarian function in premenopausal IB2 cervical cancer patients.
    Gynecologic and Obstetric Investigation 01/2011; 71(1):19-23. · 1.28 Impact Factor
  • Article: Para-aortic lymphadenectomy in the management of preoperative grade 1 endometrial cancer confined to the uterine corpus.
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    ABSTRACT: The aim of this study was to determine the risk of para-aortic lymph node metastasis in surgically staged patients presenting with preoperative grade 1 endometrial cancer and to assess the impact of para-aortic lymphadenectomy. A total of 131 consecutive patients diagnosed with preoperative grade 1 endometrial cancer from 2004 to 2009 were analyzed. We included women with endometrial cancer that was thought preoperatively to be confined to the uterine corpus, and all patients had complete staging operation including total hysterectomy, bilateral salpingo-oophorectomy, peritoneal washings, pelvic lymphadenectomy, and para-aortic lymphadenectomy. Of 131 patients, 6 (4.6%) had positive para-aortic lymph nodes and only 2 (1.5%) had isolated para-aortic nodal metastasis with negative pelvic nodes. In comparison of preoperative and postoperative histology, 6.8% of patients were upgraded, with 5.3% grade 2 and 1.5% grade 3. Advanced stage disease was found in 12.9%. Deep myometrial invasion by MRI and CA 125 levels of ≥ 31 U/ml were found to be independent preoperative risk factors for para-aortic lymph node metastasis. Some patients with preoperative grade 1 endometrial cancer are found to have upgraded disease and para-aortic nodal metastasis. Para-aortic lymphadenectomy should be considered in patients presenting with preoperative grade 1 endometrial cancer, especially in the setting of preoperative CA 125 levels of > 31 U/ml and deep myometrial invasion by MRI.
    Annals of Surgical Oncology 12/2010; 17(12):3234-40. · 4.17 Impact Factor
  • Article: Value of sonohysterography in preoperative assessment of myometrial invasion for patients with endometrial cancer.
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    ABSTRACT: The aims of this study were to compare the diagnostic performance of sonohysterography (SH) with that of magnetic resonance imaging (MRI) in estimation of myometrial invasion and to evaluate the influence of SH on peritoneal cytologic results for patients with endometrial cancer. Seventy-four patients with endometrial cancer were included. Sonohysterography and MRI were performed before surgery. All patients had complete staging procedures, including peritoneal cytologic analyses. The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were determined for SH and MRI. The concordance rates of myometrial invasion for SH and MRI were 82.4% and 81.1%, respectively. The sensitivity, specificity, PPV, and NPV for identification of deep myometrial invasion were 64.7%, 87.7%, 61.1%, and 89.3% on SH and 70.6%, 84.2%, 57.1%, and 90.6% on MRI. Two patients (2.7%) were found to have positive results for malignant cells on peritoneal cytologic analyses. Sonohysterography appears to be a useful preoperative method for predicting myometrial invasion, comparable to MRI.
    Journal of ultrasound in medicine: official journal of the American Institute of Ultrasound in Medicine 06/2010; 29(6):923-9. · 1.25 Impact Factor
  • Article: Comparison of laparoscopic versus conventional open surgical staging procedure for endometrial cancer.
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    ABSTRACT: The aim of this study was to compare the surgical outcomes of laparoscopic surgery and conventional laparotomy for endometrial cancer. A total of 104 consecutive patients were non-randomly assigned to either laparoscopic surgery or laparotomy. All patients underwent comprehensive surgical staging procedures including total hysterectomy, bilateral salpingo-oophorectomy, and pelvic/para-aortic lymphadenectomy. The safety, morbidity, and survival rates of the two groups were compared, and the data was retrospectively analyzed. Thirty-four patients received laparoscopic surgery and 70 underwent laparotomy. Operation time for the laparoscopic procedure was 227.0+/-28.8 minutes, which showed significant difference from the 208.1+/-46.4 minutes (p=0.032) of the laparotomy group. The estimated blood loss of patients undergoing laparoscopic surgery was 230.3+/-92.4 mL. This was significantly less than that of the laparotomy group (301.9+/-156.3 mL, p=0.015). The laparoscopic group had an average of 20.8 pelvic and 9.1 para-aortic nodes retrieved, as compared to 17.2 pelvic and 8.5 para-aortic nodes retrieved in the laparotomy group. There was no significant difference (p=0.062, p=0.554). The mean hospitalization duration was significantly greater in the laparotomy group than the laparoscopic group (23.3 and 16.4 days, p<0.001). The incidence of postoperative complications was 15.7% and 11.8% in the laparotomy and laparoscopic groups respectively. No statistically significant difference was found between the two groups in the survival rate. Laparoscopic surgical staging operation is a safe and effective therapeutic procedure for management of endometrial cancer with an acceptable morbidity compared to the laparotomic approach, and is characterized by far less blood loss and shorter postoperative hospitalization.
    Journal of Gynecologic Oncology 06/2010; 21(2):106-11. · 1.49 Impact Factor
  • Article: Conservative management of stage IA1 squamous cell carcinoma of the cervix with positive resection margins after conization.
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    ABSTRACT: To evaluate the efficacy of cold knife conization with electrocauterization and the feasibility of conservative management in patients with stage IA1 carcinoma of the cervix according to margin status after conization. Medical and histopathological records of 108 patients with stage IA1 cervical carcinoma were reviewed retrospectively. Patients underwent cold knife conization with electrocauterization or conization followed by hysterectomy. Disease recurrence was defined as a histologic diagnosis of cervical intraepithelial neoplasia (CIN) 2 or higher grade lesion. Forty patients underwent conization followed by hysterectomy; of 27 women with positive margins, 14 (35%) had a residual lesion. Sixty-eight patients underwent conization without further surgical intervention. Forty patients had a negative resection margin without recurrence, while 28 had a positive resection margin: positive exocervical (n=11), positive endocervical (n=17). Among these, there were 7 cases of recurrence: positive exocervical (n=1); positive endocervical (n=6). Cold knife conization with electrocauterization appears to be a safe treatment option for patients with stage IA1 cervical carcinoma if careful follow-up is guaranteed for patients with CIN 3 exocervical resection margins. However, patients with CIN 3 endocervical resection margins should be managed surgically with repeat conization or hysterectomy.
    International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics 05/2010; 109(2):110-2. · 1.41 Impact Factor
  • Article: The expression of syndecan-1 is related to the risk of endometrial hyperplasia progressing to endometrial carcinoma.
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    ABSTRACT: Aberrant expression of the cell surface proteoglycan, syndecan-1, is found in many malignancies. The current study describes the immunohistochemical study of syndecan-1 expression in normal, hyperplastic, and malignant endometrial tissues for evaluation of application as a parameter of cancer progression in patients with endometrial hyperplasia. Immunohistochemical staining of syndecan-1 was performed in 101 formalin fixed, paraffin embedded sections of normal, hyperplastic, and malignant endometrial tissues. We analyzed specimens from patients with normal endometrium (NE, N=10) as controls, and those of simple hyperplasia (SH, N=20), complex hyperplasia without atypia (CH, N=20), atypical hyperplasia (AH, N=20), and endometrial cancer (EC, N=31). The mean rank of expression scores based on the frequency of syndecan-1 staining were 31.6, 20.5, 52.9, 72.1, and 62.1 for NE, SH, CH, AH and EC, respectively (p<0.001). Syndecan-1 expression was significantly greater in CH (p<0.001) or AH (p<0.001) than in SH, and significantly greater in AH compared to CH (p=0.028). Syndecan-1 is more frequently expressed in CH (p=0.042), AH (p<0.001), or EC (p=0.002) than in NE. Syndecan-1 expression did not differ significantly between NE and SH (p=0.248). Syndecan-1 expression appears to be useful as a predictive indicator in endometrial hyperplasia.
    Journal of Gynecologic Oncology 03/2010; 21(1):50-5. · 1.49 Impact Factor
  • Article: Young girls with malignant ovarian germ cell tumors can undergo normal menarche and menstruation after fertility-preserving surgery and adjuvant chemotherapy.
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    ABSTRACT: Abstract Objective. To evaluate the long-term outcome and ovarian function in premenarchal and adolescent patients with malignant ovarian germ cell tumors after fertility-preserving surgery and adjuvant chemotherapy. Design. Retrospective review of medical records. Setting. Ajou University Hospital, a tertiary care hospital in South Korea. Population. Forty-five patients with malignant ovarian germ cell tumors. Methods. A retrospective analysis of patients with malignant ovarian germ cell tumors was conducted and a statistical analysis was performed. Main outcome measures. There were 9 premenarchal and 16 adolescent patients; the median ages at diagnosis were 7 and 18 years, respectively. All patients were treated with fertility-preserving surgery. Seventeen of the patients received adjuvant chemotherapy with bleomycin, etoposide, and cisplatin (68.0%). There were no disease recurrences or deaths. Of the nine premenarchal patients, eight (88.9%) subsequently had normal menarche. Among the 16 adolescent patients, 15 (93.8%) resumed normal menstruation and 1 had premature ovarian failure. Conclusion. Premenarchal and adolescent patients with malignant ovarian germ cell tumors have excellent survival with fertility-preserving surgery and adjuvant chemotherapy. The majority of these patients can have normal menarche and menstruation.
    Acta Obstetricia Et Gynecologica Scandinavica 11/2009; 89(1):126-30. · 1.77 Impact Factor
  • Article: Premenopausal early-stage endometrial carcinoma patients with low CA-125 levels and low tumor grade may undergo ovary-saving surgery.
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    ABSTRACT: The purpose of this study was to determine the possible predicting factors of coexisting adnexal malignancies, and to evaluate the safety of ovary-saving surgery for early-stage endometrial carcinoma in premenopausal patients. A retrospective review of 107 patients with endometrial carcinoma who underwent surgical treatment at our institution was conducted. All patients were younger than 50 years of age and premenopausal status. Statistical analysis was performed. Of the 107 patients, 78 patients had stage I to II disease and both preoperative CA-125 levels were measured and tumor grades evaluated. On multivariate analysis, preoperative CA-125 levels (p=0.018) and preoperative tumor grade (p=0.029) were independent predicting factors of adnexal diseases. The risk of coexisting ovarian malignancy was 1.8% in patients with preoperative CA-125 levels less than or equal to 34.5 U/ml and preoperative tumor grade 1 or 2. The risk increases to 20% for low CA-125 and grade 3, 13.3% for high CA-125 and grade 1 or 2, and 100% for high CA-125 and grade 3. Between patients who underwent unilateral salpingo-oophorectomy and those who underwent bilateral salpingo-oophorectomy, there was no statistically significant difference in terms of BMI, preoperative CA-125 levels, FIGO stage, histology, tumor grade, lymphadenectomy, and adjuvant treatment. Ovary-saving surgery for premenopausal, early-stage endometrial cancer patients may be considered as a treatment option in those with low preoperative CA-125 and low tumor grade.
    Journal of Gynecologic Oncology 09/2009; 20(3):181-6. · 1.49 Impact Factor
  • Article: A validation study of new risk grouping criteria for postoperative treatment in stage IB cervical cancers without high-risk factors: rethinking the Gynecologic Oncology Group criteria.
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    ABSTRACT: The aim of this study was to verify whether the Gynecologic Oncology Group (GOG) criteria are valid in a different cohort of patients and to investigate simplified new criteria tailoring adjuvant radiation therapy in patients with intermediate-risk factors after radical hysterectomy. We analyzed the data of 332 patients with FIGO stage IB cervical cancer who underwent radical hysterectomy between 1994 and 2007. Two hundred and twenty-five patients without high-risk factors (lymph node metastasis, parametrial invasion, or positive surgical margins) were identified and were classified into low-risk and high-risk groups according to the GOG criteria and new criteria based on combinations of intermediate-risk factors (large tumor size, deep stromal invasion, lymph-vascular space invasion). We evaluated the prognostic significance of both criteria. We identified 140 low-risk patients and 85 high-risk patients in the application of the GOG criteria. Low-risk patients had significantly better disease-free survival (DFS) (P=0.001) and overall survival (OS) (P=0.013) than high-risk patients. There were 145 low-risk patients and 80 high-risk patients on applying the new criteria. Low-risk patients had significantly better DFS (P=0.001) and OS (P=0.013) than high-risk patients. The receiver operating characteristic (ROC) curves showed that both criteria had similar performance for predicting which patients would have help from adjuvant therapy. This study demonstrated that the GOG criteria were still valid in the different population, the simplified new criteria were convenient to apply in practice, and the performance of the new criteria was as good as the GOGs.
    European journal of obstetrics, gynecology, and reproductive biology 09/2009; 147(1):91-6. · 1.97 Impact Factor