Villous adenomas are common neoplasms of the colon, often causing anem
ia or hemoccult positive stools. Less typically, these lesions may res
ult in abdominal pain, melena, obstruction, or change in bowel habits.
Intussusception may occur, but this complication is unusual in adults
. Spontaneous bowel perforation attributable to colonic polyps has not
been previously reported. We present here the first reported case of
an adenomatous polyp with bowel perforation and bladder involvement.