Seven patients with acute and progressive abdominal distension secondary to massive cecal and right colon ileus are analyzed. Five had pseudoobstruction of the colon and two had cecal volvulus. Two of the patients with pseudoobstruction and one with cecal volvulus died from preexisting diseases. Pseudoobstruction of the colon is not a rare complication of elderly, sick, bedridden patients. Differential diagnoses include cecal and sigmoid volvulus and acute gastric dilation. Initial conservative therapy is warranted if no peritoneal signs are present. If the cecal diameter is more than 12 cm, colonoscopic decompression with a fiberscope should be attempted. If unsuccessful, tube cecostomy will provide curative, life-saving therapy even if taenia splitting is present. Perforation or widely scattered areas of necrosis make resection mandatory.