“…It has been suggested that this is a common finding in the elderly and cases with elevated urinary indican have been reported in elderly patients who had no demonstrable anatomical lesions of the small bowel (Roberts, James and Jarvis, 1977;Holden et al, 1978). A recent report claimed that up to 50%o of a group of elderly patients had a positive screening test for excess urinary indican (Pearce, 1980).…”