bowler hat sign
DiffDx Benign—leiomyoma, lipoma, hyperplastic polyp, premalignant; malignant—leiomyosarcoma, lymphoma, melanoma
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
bowler hat signGI radiology Spreading of barium contrast around an adenomatous or villotubular colon polyp, at the base of which there is a recess between the stalk and the polyp 'body', forming the hat's 'crown' DiffDx Benign-leiomyoma, lipoma, hyperplastic polyp, premalignant; malignant–leiomyosarcoma, lymphoma, melanoma
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.