THE CLASSIC appearance of ulcerative colitis in which the involvement of the rectum or rectosigmoid is succeeded by a more or less diffuse involvement of the colon is a familiar clinical problem. However, the occurrence of regional or segmental types is much less common and may present diagnostic difficulties. The least common of the segmental distributions is that in which the sigmoid alone is involved. Since the pathogenesis of this lesion is obscure and the diagnosis often difficult, it has seemed worth while to report a single case.
REPORT OF A CASE
J. K., a 34-year-old white man, was admitted to the Veterans Administration Hospital, Aug. 29, 1950, complaining of mild lower abdominal pain, weakness, malaise, and weight loss of six weeks' duration. There was no disturbance in bowel function and no change in the color or consistency of the stools. The patient appeared chronically ill and pale and thin,