A Case of Intersigmoid Hernia Diagnosed Preoperatively Using CT and Treated by Laparoscopic Surgery

A 56-year-old man presented to his primary care physician with abdominal pain and vomiting. These symptoms were temporarily improved by analgesics; however, the abdominal pain worsened on the next day and he was referred to our hospital. An abdominal X-ray showed a dilated small intestine and CT showed herniation of the small intestine on the left dorsal side of the mesentery of the sigmoid colon. These findings led to diagnosis of intersigmoid hernia. Elective laparoscopic surgery was performed after decompression using a long tube. Intraoperative findings showed the small intestine herniated into the dorsal recessus of the mesentery of the sigmoid colon. Incarceration of the small intestine was resolved by retraction. The hernia orifice was 2 cm in diameter, and we dissected the fusion fascia of the mesentery of the sigmoid colon to open the orifice. An intersigmoid hernia is relatively uncommon, and thus, we report this case as a rare example of diagnosis of intersigmoid hernia using CT and treatment by laparoscopic surgery.