Acute Small Bowel Obstruction Due to Meckel's Diverticulum Forming a Knot around the Ileum: An Unusual Presentation

摘要

Small-bowel obstruction that accounts for 20% of causes of intestinal obstruction may be due to many causes and Meckel's diverticulum as a cause is rare. We present a 70-year-old man who presented with symptoms of acute intestinal obstruction. Examination revealed central abdominal distension with visible step-ladder peristalsis. At laparotomy, multiple loops of distended small bowel were found, with a Meckel's diverticulum encircling the ileum and knotting around itself and the ileum from an internal hernial orifice in the mesentry. Resection of the part including the diverticulum and end to end anastomosis of the ileum was carried out. Postoperatively, the patient recovered completely. This case highlights the importance of considering a Meckel's diverticulum as a cause of intestinal obstruction in all age groups with no previous abdominal pathology or surgery and not only in young patients. Introduction In the developed world, small-bowel obstruction accounts for 20% of all acute surgical etiologies 1 . The cause of small-bowel obstruction includes several pathological factors, a common cause being postoperative adhesions followed by herniae 1 . Here is a case of a Meckel's diverticulum in a 70-year-old man with acute intestinal obstruction wherein the diverticulum formed a knot around the bowel, making this case a rare one. This case also emphasizes the fact that a differential diagnosis of Meckel's diverticulum should be kept in mind whenever a patient of any age group presents with intestinal obstruction, especially when there is no hernia clinically or past history of abdominal surgeries. It also emphasizes rational and precise use of investigations. Case History A 70-year-old male patient came to the emergency department with history of abdominal pain and vomiting for the last five days and distension of the abdomen and constipation for the last two days. The abdominal pain was initially dull aching and intermittent but gradually became colicky in nature and had increased in severity and intensity for the past two days associated with bilious vomiting, five to six episodes per day and few hours after food intake. There were no genitourinary complaints or fever or jaundice. There was no history of similar episodes or abdominal surgeries in the past. On examination, the positive findings were: central abdominal distension with a visible step-ladder peristalsis and the patient was in hypotension with tachycardia. There were no signs of hernia or peritonitis. After initial resuscitation measures with IV fluids and nasogastric tube passage, the patient was investigated in the form of routine blood investigations and an X-ray, supine and erect, of the abdomen, which showed few air-fluid levels with dilated loops of intestine, probably the jejunum (Figure1).