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Intest Res > Volume 10(3); 2012 > Article
Intestinal Research 2012;10(3):295-299.
DOI:    Published online July 31, 2012.
A Case of Mixed Hyperplastic-adenomatous Rectal Polyp with Composition of Invasive Adenocarcinoma
Hyo Rim Seo, Ji Hyun Kim, Soo Jin Jung, Yun Jung Choi, Choong Heon Ryu, Kwan Sik Park, Seoung In Ha, Eun Uk Jung, Sang Heon Lee, Sung Jae Park, Jung Sik Choi, Sam Ryong Jee, Youn Jae Lee, Sang Young Seol
Departments of Internal Medicine and Pathology, Busan Paik Hospital, Inje University College of Medicine, Busan, Korea
침습선암의 조직소견이 동반된 혼합형 증식성 선종성 직장용종 1예
서효림, 김지현, 정수진, 최윤정, 류충헌, 박관식, 하승인, 정은욱, 이상헌, 박성재, 최정식, 지삼룡, 이연재, 설상영
인제대학교 의과대학 부산백병원 내과학교실, 병리학교실
Epithelial colon polyps are largely divided into hyperplastic and adenomatous polyps. Adenomatous polyps are premalignant lesions, whereas hyperplastic polyps are regarded as benign lesions. However, this histological classification has been blurred, as cases of malignant changes in hyperplastic polyposis, mixed hyperplastic adenomatous polyps (MHAPs), and serrated adenomas in the colon have been reported. Rare cases of MHAP have been reported, and are mainly found at the proximal colon with a relatively large size. MHAPs seem to be an intermediate stage of the hyperplastic polyp-adenoma sequence or a collision tumor. Here, we report on a case of a single polyp in the rectum diagnosed with a MHAP combined with an invasive adenocarcinoma. (Intest Res 2012;10: 0-299)
Key Words: Hyperplastic polyp, Invasive adenocarcinoma, Rectum
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