Chronic intestinal pseudo-obstruction (CIPO) is a rare disorder characterised by recurrent symptoms and signs of intestinal obstruction without an underlying mechanical cause. Caecal volvulus remains a rare cause of intestinal obstruction that often requires operative intervention. We describe the previously unreported case of caecal volvulus occurring in an adult patient with CIPO, together with his subsequent management.
case historyA 49-year-old man presented with a history of bloating, constipation, abdominal pain and intermittent vomiting since late childhood. This had been extensively investigated in the past with plain radiography, barium studies, computed tomography (CT), ultrasonography and numerous blood studies. Multiple plain abdominal x-rays had invariably demonstrated dilated loops of bowel with multiple fluid levels. Transit studies revealed extremely poor intestinal transit times with a lack of peristaltic activity. In 1991 a small bowel meal demonstrated dilatation of the second and third parts of the duodenum with barium remaining in the duodenum at 24 hours. Due to ongoing and debilitating symptoms, the patient underwent a partial duodenectomy with duodenojejunostomy. The procedure offered only temporary relief of symptoms and so he was referred for specialist assessment, being eventually diagnosed with CIPO in 1992. The previous year, he had been diagnosed with an atonic bladder by a consultant urologist and instructed to perform daily intermittent self-catheterisation.Over the next 17 years, the patient had multiple admissions to the same institution with symptoms and signs of bowel obstruction. In these cases, he was treated conservatively with laxatives, prokinetic drugs, nasogastric aspiration and enteral/parenteral nutrition. In most cases he was under the care of the same consultant who recognised his condition and symptoms as 'functional' as opposed to 'mechanical'. In one recent admission, the patient presented with a two-day history of vomiting, absolute constipation, abdominal distension and left-sided abdominal pain. On examination the patient was clearly malnourished with a distended, non-tender abdomen. Bowel sounds were absent. A digital rectal examination was normal. An abdominal x-ray demonstrated a massively dilated loop of large bowel, suggestive of a colonic volvulus (Fig 1). CT of the abdomen was performed, demonstrating a large caecal volvulus (Fig 2).