A 78-yr-old man underwent Tc-99m-labeled red cell examination for a ga
strointestinal bleeding episode. Gallbladder visualization was noted d
uring the examination. Hemobilia has been reported in a variety of pat
hologic conditions; scintigraphic gallbladder visualization has also b
een reported as a result of the unusual radiolabeling characteristics
of (TC)-T-99m during red cell scintigraphy. Postmortem examination rev
ealed angiodysplasia of the gallbladder and other sites in the gastroi
ntestinal tract. Angiodysplasia must be considered in the pathologic s
pectrum of causes of hemobilia.