Two cases are reported of perforation of the gut caused by biliary endopros
thesies in the three-year period 1993-1995. The first patient was an 81-yea
r-old man who had perforation of the terminal ileum caused by a straight 10
French/7 cm stent which had been dislodged from the bile duct; he underwen
t laparotomy but did not recover. The second patient was an 86-year-old man
who had perforation of the sigmoid colon caused by a straight 7 French/5 c
m stent left in the duodenum during a stent exchange procedure; he was succ
essfully treated laparoscopically. Two cases of gut perforation in a three-
year period is a rather high rate of this rare complication of placement of
biliary endoprostheses.