Jejunal diverticulosis in a family.

The presence of small intestinal diverticula was examined in a family of eight siblings. Six of the siblings had diverticula of the duodenum and/or the jejunoileal tract. Three of them had multiple jejunoileal diverticula, one had two jejunal diverticula, and two had duodenal diverticula. In addition, diseases of an immunologic nature were present in four of the siblings (rheumatoid arthritis, ulcerative colitis, myxoedema following thyroiditis, and non-viral hepatitis).