Idiopathic ulcerative colitis in Istanbul: clinical review of 204 cases.

A clinical review of 204 cases of idiopathic ulcerative colitis (IUC) seen in an insurance hospital in Istanbul during a period of nine years is presented. The criteria of diagnosis were based on history and results of rectosigmoidoscopic, biopsy, and barium-enema examinations. In the majority of cases (74 per cent), the disease manifested in the mild form, despite a history of one to five years' duration at the time of diagnosis.