Tae Wook Kong

Ajou University, Sŏul, Seoul, South Korea

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Publications (7)10.62 Total impact

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    ABSTRACT: There have been many comparative reports on laparoscopic radical hysterectomy (LRH) versus abdominal radical hysterectomy (ARH) for early-stage cervical cancer. However, most of these studies included patients with International Federation of Gynecology and Obstetrics (FIGO) stage IA2 and small (tumor diameter ≤2 or 3 cm) IB1 disease. The purpose of this study was to compare the feasibility, morbidity, and recurrence rate of LRH and ARH for FIGO stage IB and IIA cervical cancer with tumor diameter of 3 cm or greater. We conducted a retrospective analysis of 88 patients with FIGO stage IB and IIA cervical cancer with tumor diameter of 3 cm or greater. All patients had no evidence of parametrial invasion and lymph node metastasis in preoperative gynecologic examination, pelvic magnetic resonance imaging, and positron emission tomography-computed tomography, and they all underwent LRH or ARH between February 2006 and March 2013. Among 88 patients, 40 patients received LRH whereas 48 underwent ARH. The mean estimated blood loss was 588.0 mL for the ARH group compared with 449.1 mL for the LRH group (P < 0.001). The mean operating time was similar in both groups (246.0 minutes in the ARH vs 254.5 minutes in the LRH group, P = 0.589). Return of bowel motility was observed earlier after LRH (1.8 vs 2.2 days, P = 0.042). The mean hospital stay was significantly shorter for the LRH group (14.8 vs 18.0 days, P = 0.044). There were no differences in histopathologic characteristics between the 2 groups. The mean tumor diameter was 44.4 mm in the LRH and 45.3 mm in the ARH group. Disease-free survival rates were 97.9% in the ARH and 97.5% in the LRH group (P = 0.818). Laparoscopic radical hysterectomy might be a feasible therapeutic procedure for the management of FIGO stage IB and IIA cervical cancer with tumor diameter of 3 cm or greater. Further randomized studies that could support this approach are necessary to evaluate long-term clinical outcome.
    International Journal of Gynecological Cancer 01/2014; · 1.94 Impact Factor
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    ABSTRACT: The aim of this study was to evaluate indications, efficacy, and complications associated with pelvic arterial embolization (PAE) for postpartum hemorrhage (PPH). We retrospectively reviewed the medical records of 117 consecutive patients who underwent PAE for PPH between January 2006 and June 2013. In our single-center study, 117 women underwent PAE to control PPH refractory to conservative management including uterine massage, use of uterotonic agents, surgical repair of genital tract lacerations, and removal of retained placental tissues. Among 117 patients, 69 had a vaginal delivery and 48 had a Cesarean section. The major indication for embolization was uterine atony (54.7%). Other causes were low genital tract lacerations (21.4%) and abnormal placentation (14.5%). The procedure showed a clinical success rate of 88.0% with 14 cases of PAE failure; there were 4 hemostatic hysterectomies and 10 re-embolizations. On univariate analysis, PAE failure was associated with overt disseminated intravascular coagulation (P=0.009), transfusion of more than 10 red blood cell units (RBCUs, P=0.002) and embolization of both uterine and ovarian arteries (P=0.003). Multivariate analysis showed that PAE failure was only associated with transfusions of more than 10 RBCUs (odds ratio, 8.011; 95% confidence interval, 1.531-41.912; P=0.014) and embolization of both uterine and ovarian arteries (odds ratio, 20.472; 95% confidence interval, 2.715-154.365; P=0.003), which were not predictive factors, but rather, were the results of longer time for PAE. Three patients showed uterine necrosis and underwent hysterectomy. PAE showed high success rates, mostly without procedure-related complications. Thus, it is a safe and effective adjunct or alternative to hemostatic hysterectomy, when primary management fails to control PPH.
    Obstetrics & gynecology science. 01/2014; 57(1):17-27.
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    ABSTRACT: To assess the effectiveness of emergency single-dose levonorgestrel contraception in preventing unintended pregnancies among woman who visited the emergency department (ED) due to sexual assault (SA). We conducted a retrospective chart review in a university hospital in South Korea. Cases from November 10, 2006 to November 9, 2009 were enrolled. Information from the initial visit to the ED and subsequent follow-up visits to the gynecology outpatient clinic was collected. In total, 1,179 women visited the ED due to SA. Among them, 416 patients had a gynecological examination and 302 patients who received emergency contraception (EC) (1.5 mg single-dose levonorgestrel) at the ED due to SA were enrolled. Ten patients did not return for follow-up examinations. In follow-up visits at the outpatient clinic, two pregnancies were confirmed, which showed the failure rate of the EC to be 0.68%. Single-dose levonorgestrel EC is extremely effective at preventing pregnancy among victims of SA.
    Clinical and experimental reproductive medicine. 09/2013; 40(3):126-30.
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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. · 1.73 Impact Factor
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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. · 1.10 Impact Factor
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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. · 4.12 Impact Factor
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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. · 1.73 Impact Factor