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Case Reports
. 1988 Mar;31(3):236-43.
doi: 10.1007/BF02552553.

Flat adenoma and flat mucosal carcinoma (IIb type)--a new precursor of colorectal carcinoma? Report of two cases

M Adachi  1 , T Muto, Y Morioka, T Ikenaga, M Hara
Affiliations
Case Reports

Flat adenoma and flat mucosal carcinoma (IIb type)--a new precursor of colorectal carcinoma? Report of two cases

M Adachi et al. Dis Colon Rectum. 1988 Mar.

Abstract

Two flat adenomas and a flat mucosal carcinoma of the colon were reported in patients with synchronous and metachronous colonic carcinomas. These lesions were almost flat and were not detected by preoperative endoscopic examinations. Colonoscopists should be aware of the presence of flat adenomas, which can be easily missed, and recognize them as lesions that play an important role in the "adenoma-carcinoma sequence."

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