Malone appendicostomy: an unexpected complication.

The Malone appendicostomy is a novel option for surgical management of faecal incontinence and chronic constipation, by permitting the administration of antegrade colonic enemas for colonic evacuation. We report the case of a 54-year-old female who had undergone abdomino perineal resection for low rectal cancer followed by total perineal reconstruction with perineal colostomy, dynamic double graciloplasty and Malone appendicostomy. After 7-year follow-up, functional results and quality of life scores were satisfactory. Suddenly the patient described increasing difficulty with intubation of her appendicostomy and complete reflux of the enema liquid, which radiology referred to a calcified body of 35 mm within the Malone appendicostomy causing nearly complete obstruction of the conduit. A surgical exploration was necessary to extract the fecolith allowing full recovery with return to satisfactory Malone appendicostomy function. To our knowledge, this is the first report of a fecolith causing obstruction within a Malone appendicostomy.

Acute ischaemia of the lower limb and sciatic artery aneurysm.

Persistent sciatic artery is a rare abnormality but complications are frequent, especially secondary to aneurysmal degeneration. Typical symptoms include sciatic pain associated with a pulsatile mass in the buttock and/or an acute ischaemia of the lower limb. The successful surgical management of one such case is described, together with a brief review of the literature.

Acute watery diarrhea as the initial presenting feature of a pheochromocytoma in an 84-year-old female patient.

We report the case of an 84-year-old woman who was initially admitted to the emergency room of our institution for frank dehydration caused by acute and severe secretory diarrheas along with acidosis and hypokalemia. After extensive gastrointestinal investigations, the etiology of the diarrhea remained unclear. Because clinical symptoms and ionogram parameters worsened, despite intravenous fluids and electrolyte replacement, an abdominal CT scan was performed and unexpectedly revealed a 4.5-cm mass in the right adrenal gland. Several separate 24-hour urine catecholamines were shown to be highly elevated. The diagnosis of pheochromocytoma was confirmed by MIBG scintigraphy and MRI. Before the admission, the patient never experienced symptoms suggestive of pheochromocytoma, except dry mouth and fear of impending death on several occasions. After 2 weeks, the diarrhea stopped abruptly and spontaneously without specific medication but after adequate rehydration. The patient subsequently underwent surgical removal of the adrenal medullary mass. Postoperatively, urinary catecholamines returned to normal values. Immunohistochemical study of the tumor confirmed the diagnosis of pheochromocytoma and revealed the presence of VIP-positive cells organized as islets in scattered areas of the tissue. This case illustrates the protean mode of presentation of pheochromocytoma, as well as the ability of medullary neural crest-derived cells to produce various neuropeptides potentially responsible for a large variety of symptoms.