Sangtae Choi

Gachon University, Sŏngnam, Gyeonggi-do, South Korea

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Publications (2)4.48 Total impact

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    ABSTRACT: It is still a matter of debate as to whether palliative resection of obstructive primary tumors may prolong the survival of patients with obstructive colon cancer and unresectable synchronous metastases. The main goal of this retrospective study was to compare the use of self-expanding metallic stents (SEMS) with open surgery for the palliation of patients with respect to survival, morbidity, and the time to start chemotherapy. Between January 2000 and January 2008, 88 consecutive patients (52 who underwent surgery and 36 who underwent SEMS insertion) with obstructive colon cancer and unresectable synchronous metastases were retrospectively evaluated. The median hospital stay for all admissions was 7.2 days (range, 3-29 days) in the SEMS group and 12.3 days (range, 6-45 days) in the surgery group (P = .001). The incidence of stoma formation was significantly lower in the SEMS group than in the surgery group (16.7% vs 38.5%, respectively, P = .021). The median time to starting chemotherapy was significantly shorter in patients who underwent SEMS insertion compared with those who underwent surgery (8.1 vs 21.7 days, respectively, P = .001). The 1-year and 2-year survival rates were 44.2% and 21.27% in the surgery group and 16.7% and 2.8% in the SEMS group, respectively. The median survival for all patients was 15 months from the initiation of treatment (95% confidence interval, 6.0-19 months). Both procedures can be safely performed, but the choice of treatment should be individualized and discussed with a multidisciplinary team.
    No preview · Article · Jan 2012 · American journal of surgery
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    ABSTRACT: Background/aim The purpose of this study was to investigate clinically useful information for effective screening for synchronous and metachronous second primary cancers and to suggest potential surveillance tool. Methods We retrospectively reviewed 1,063 patients who were treated with potentially curative surgery for colorectal cancer at Gachon University, Gil Hospital from 1997 to 2007. Results The incidence of synchronous or metachronous cancer in addition to colorectal cancer was 5.3% (57 patients). The most common second primary cancer was stomach (54.3%), followed by cancers in cervix (12.2%). The time interval between the first and second tumor in colorectal cancer associated with metachronous extracolonic malignancy ranged from 1.1 to 10.8 years. The incidence of early-stage tumor was higher in patients with synchronous cancer than in those with a metachronous cancer with statistical significance (p = 0.034). The 5-year survival rate of the colorectal cancer group without second primary cancer was 70.1%, whereas that for the second primary cancer group was 63.8% (p = 0.253). The 5-year survival rate of the colorectal cancer group with stomach cancer was 70.5%, whereas that for the second primary cancer other than stomach cancer group was 56.6% (p = 0.282). Conclusion The frequent association between colorectal cancer and gastric cancer suggests an inclusion of gastrofiberscope when surveillancing patients with colorectal cancer in Korean population. Second primary cancers may develop even 10 years after the initial operation; thus, a need for lifelong surveillance even more than 5 years may be necessary.
    No preview · Article · Apr 2010 · Langenbeck s Archives of Surgery