Abstract
Acquired giant diverticulum is an uncommon but well-recognized finding in patients with diverticular disease of the colon. Fifty-one cases have been reported so far in the English language literature (Kricun et al., 1980). In forty-eight cases the diverticulum arose from the sigmoid colon; in two from descending colon (Ferguson and Boinis, 1966; Kricun et al., 1980); but in only one case from the transverse colon (Sagar, 1973). A further case of a solitary giant diverticulum arising from the transverse colon of a patient with extensive diverticulosis is reported. Because of its situation high in the abdomen on plain radiographs the diverticulum was initially mistaken for a lesion arising from the upper gastrointestinal tract. Barium follow-through examination provided the correct diagnosis. A previously well 66-year-old male presented with a fourday history of constipation, upper abdominal pain and slight abdominal distension.

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