Haudek niche
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Haudek sign — a projecting shadow in radiographs of penetrating gastric ulcer, due to settlement of bismuth in pathologic niches of the stomach wall; called also Haudek niche … Medical dictionary
niche sign — Haudek s … Medical dictionary
Haudek sign (niche) — Hau·dek sign (niche) (houґdek) [Martin Haudek, Austrian radiologist, 1880–1931] see under sign … Medical dictionary
niche — 1. In contrast radiography, an eroded or ulcerated area, especially gastrointestinal or vascular, which can be detected when it fills with contrast medium. 2. An ecologic term for the position occupied by a species in a … Medical dictionary
Haudek — Martin, Austrian roentgenologist, 1880–1931. See H. niche … Medical dictionary
