Snapshot in surgery: brain abscess as a complication of a recurrent sigmoid diverticular abscess.

A 35-year-old man was found to have a cerebral abscess secondary to a recurrent sigmoid diverticular abscess. Both cultures grew Streptococcus anginosus. Brain abscess is a rare but potential complication of sigmoid diverticulitis. Streptococcus anginosus, which is found in human gut flora, is a common cause of brain abscess.