Acute dilatation of the colon with signs of systemic toxicity developed in an elderly man with malignant lymphoma. Although barium contrast X-rays taken previously were interpreted as consistent with granulomatous colitis, rectal biopsy had revealed features characteristic of malignant lymphoma, poorly differentiated lymphocytic type. Bone marrow and lymph nodes were also involved. The onset of dilatation was temporally related to therapy with opiates and anticholinergics, and the acute episode was resolved with nasogastric suction, intravenous fluids, albumin, and antibiotics.
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