Korean Journal of Gastrointestinal Endoscopy 2008;36(1): 40-43.
점막하층(sm3)을 침범한 함몰형의 미소 대장암 1예
김연수ㆍ남순우ㆍ김정옥*ㆍ기영화ㆍ송춘영ㆍ이승우ㆍ강상범ㆍ이동수
가톨릭대학교 의과대학 내과학교실, *병리학교실
Minute-depressed Type of Submucosal Colon Cancer
Yeon Soo Kim, M.D., Soon Woo Nam, M.D., Jeong Ok Kim, M.D.*, Young Hwa Ki, M.D., Chun Young Song, M.D., Seung Woo Lee, M.D., Sang Bum Kang, M.D. and Dong Soo Lee, M.D.
Departments of Internal Medicine and *Pathology, College of Medicine, The Catholic University of Korea, Daejeon, Korea
Abstract
The development of colorectal cancer has been known as the adenoma-carcinoma sequence. Yet another route for cancer development has recently been proposed, which is call the de novo pathway based on the reports of the depressed-type early colorectal cancers. Early colorectal cancer is defined as invasive tumor limited to the colorectal mucosa or submucosa, regardless of the presence or absence of lymph node metastasis. Especially, depressed type colorectal cancers have a much higher rate of submucosal invasion and rapid progression despite of their relatively small sizes. Our case displayed a depressed type tumor that was only 5mm in diameter and it had invaded the deep submucosal layer (SM3); this was resected by operation with no predictive endoscopic finding. So, the depressed type tumor can show deep invasion or lymph node metastasis despite of its small size. (Korean J Gastrointest Endosc 2008;36:40-43)
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