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8 "Seung Hyun Lee"
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Original article
Was there any change in surgical treatment for colorectal cancer during the COVID-19 pandemic?
Yeajin Moon, Seung Hun Lee, Seung Hyun Lee
Kosin Med J. 2025;40(3):207-212.   Published online September 23, 2025
DOI: https://doi.org/10.7180/kmj.25.116
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Abstract PDFPubReader   ePub   
Background
The aim of this study was to review changes in surgical treatment for colorectal cancer during the coronavirus disease 2019 (COVID-19) pandemic at a tertiary hospital in Korea.
Methods
In total, 757 patients who underwent colorectal cancer surgery at Kosin University Gospel Hospital between January 2019 and December 2021 were analyzed. Patients were divided into two groups based on the dates of the COVID-19 pandemic: the pre-pandemic group (321 cases, January 2019 to February 2020) and the pandemic group (436 cases, March 2020 to December 2021). Medical records were reviewed retrospectively to compare surgical treatment patterns.
Results
No significant differences were found in the diagnostic process (asymptomatic vs. symptomatic), preoperative serum carcinoembryonic antigen level (<10 ng/dL vs. ≥10 ng/dL), or cases of obstruction or perforation before and during the COVID-19 pandemic. Combined organ resection was more frequent in the pandemic group (6.2% vs. 13.5%; p=0.06), while stages 0 and 1 cancer were significantly less frequent in the pandemic group (25.8% vs. 18.3%; p=0.008).
Conclusions
During the COVID-19 pandemic, operations for early-stage colorectal cancer (stages 0 and 1) decreased, while combined organ resections increased. These changes in surgical treatment for colorectal cancers are likely to impact oncologic outcomes. Further long-term follow-up studies are necessary to assess the effects of the pandemic on colorectal cancer outcomes.
Case report
Simultaneous Laparoscopy-Assisted Resection for Colorectal Cancer and Metastases
Seung Hyun Lee, Joong Jae Yoo, Sung Dal Park, Byung Kwon Ahn, Sung Uhn Baek
Kosin Med J. 2015;30(1):73-79.   Published online January 20, 2015
DOI: https://doi.org/10.7180/kmj.2015.30.1.73
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Abstract PDFPubReader   ePub   
Abstract

With advancement of minimal invasive surgery, a simultaneous laparoscopy-assisted resection for colorectal cancer and metastasis has become feasible. Hence, we report three cases of simultaneous laparoscopic surgery for colorectal cancer with liver or lung metastasis. In the first case, laparoscopic right hemicolectomy and left lateral segmentectomy of liver was performed for ascending colon cancer and liver metastasis. In the second case, laparoscopic right hemicolectomy and wedge resection of right lower lung was performed for cecal cancer and lung metastasis. In the third case, laparoscopic right hemicolectomy and wedge resection of left lower lung was performed for ascending colon cancer and lung metastasis. In the first two cases, patients quickly returned to normal activity. In the third case, postoperative bleeding was observed, but spontaneously stopped. There was no postoperative mortality. Simultaneous laparoscopic surgery represents a feasible option for colorectal cancer with metastases on the other organs.

Original article
Risk Factors of Anastomotic Leakage after Rectal Cancer Resection
Seung Hyun Lee, Byung Kwon Ahn, Sung Uhn Baek
Kosin Med J. 2010;25(2):32-37.   Published online December 31, 2010
  • 672 View
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Case report
Retrorectal Gastrointestinal Stromal Tumor: Report of A Case
Young Il Choi, Seung Hyun Lee, Byung Kwon Ahn, Sung Uhn Baek
Kosin Med J. 2008;23(2):106-109.   Published online June 30, 2008
  • 662 View
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Original article
The Early Learning Curve for Laparoscopic Colorectal Surgery
Seung Hyun Lee, Byung Kwon Ahn, Sung Uhn Baek
Kosin Med J. 2007;22(1):129-133.   Published online June 30, 2007
  • 647 View
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Case report
Sigmoid Colon Cancer with Diverticulitis of Ascending Colon : Report of A Cas
Seung Hyun Lee, Byung Kwon Ahn, Sung Uhn Baek
Kosin Med J. 2007;22(1):266-269.   Published online June 30, 2007
  • 532 View
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Original article
Case report
A Case of Fournier's Gangrene after Cold Injury
Sung Jin Cho, Seung Hyun Lee, Joo Wan Yoon, Byung Kwon Ahn, Sung Uhn Baek, Yeong Min Seo
Kosin Med J. 2006;21(1):37-40.
  • 778 View
  • 0 Download
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KMJ : Kosin Medical Journal
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