De Novo Submucosal Colorectal Cancer in a 3 mm Sessile Polyp.
- Author:
So My KOO
1
;
Jin Oh KIM
;
Hyun Gun KIM
;
Tae Hee LEE
;
Seong Ran JEON
;
So Young JIN
;
Joon Seong LEE
Author Information
1. Institute for Digestive Research, Soonchunhyang University College of Medicine, Seoul, Korea. jokim31@hanafos.com
- Publication Type:Case Report
- Keywords:
Submucosal invasive colorectal cancer;
Early colorectal carcinoma;
Minute sessile polyp;
De novo carcinoma
- MeSH:
Adenoma;
Colorectal Neoplasms;
Polyps
- From:Korean Journal of Gastrointestinal Endoscopy
2011;42(2):109-112
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The majority of colorectal carcinomas (95~100%) are thought to arise from adenomas. Yet colorectal carcinomas may rarely arise de novo. The popular definition of de novo carcinoma is that the lesion should consist exclusively of a carcinoma histologically and contain no adenomatous elements. Without an adenoma-carcinoma sequence, de novo carcinomas have a much higher rate of submucosal invasion, despite their small size. Their speed of growth is thought to be rapid. Some studies have shown that de novo carcinomas might arise as a macroscopically flat or depressed lesion, rather than a protruded one. However, the typical macroscopic findings of de novo carcinomas have not been established. They might be variable macroscopically and include a protruded type. We report a case of de novo colorectal carcinoma that invaded the submucosal layer involving a minute sessile polyp only 3 mm in diameter, which was removed by endoscopic mucosal resection.
