Southern Health and Social Care Trust, UK aBstract Inguinal hernia often presents as an emergency with obstruction and subsequent strangulation. We report a unique case where an inguinoscrotal sliding type hernia contained the entire hepatic flexure as its lead point, resulting in acute colonic obstruction and caecal wall perforation.Inguinal hernia is one of the recognised dynamic, extramural causes of intestinal obstruction, where peristalsis works against a physical barrier. Initially, proximal peristalsis increases to overcome the obstruction. When the obstruction is not relieved, the proximal segment dilates, causing reduction in peristaltic strength, resulting in flaccidity and paralysis. Further proximal distension results from gas and fluid accumulation. In the setting of complete obstruction, perforation from back pressure on the proximal segment is inevitable with time. We report a case of an inguinoscrotal sliding type hernia with the hepatic flexure of the colon and omentum as its lead point, resulting in acute colonic obstruction and caecal wall 'pistol shot' perforation.
case historyA 63-year-old man with a history of chronic obstructive pulmonary disease, hypertension and ischaemic heart disease presented with a 3-day history of abdominal distension and vomiting, with absolute constipation for 5 days. He had had no previous abdominal surgery. A non-tender large irreducible right-sided inguinoscrotal hernia was found, with concomitant tenderness in the left iliac fossa. Demonstrating tachycardia, tachypnoea and hypotension, he received fluid resuscitation, and was investigated further with plain abdominal radiography and rigid sigmoidoscopy. The radiography found acute colonic distension (Fig 1). The rigid sigmoidoscope was inserted to 18cm from the anal verge. This did not demonstrate a cut-off point, therefore making diagnosis of sigmoid volvulus unlikely.