Abstract
We report a rare case of a patient with ileal duplication presenting with lower abdominal pain. A 74-year-old male visited us with a 10-day history of gradually worsening lower abdominal pain, and was admitted to our hospital. Physical examination revealed severe lower abdominal tenderness with guarding, and blood tests showed evidence of inflammation. Abdominal enhanced CT showed abscess formation in the pelvis, and an emergency operation was performed. A tubular duplication tract was found 120 cm cephalad to the ileocecal junction. The duplication tract was blind and showed formation of an abscess adherent to the sigmoid colon. Ileal duplication with abscess was diagnosed and resection of the small intestine with the duplication tract was performed. Histopathology revealed an adenocarcinoma between the blind duplication and the abscess. This is the first case of adenocarcinoma arising from a tubular-type duplication of the ileum, and the first case of abscess formation arising in a case of ileal duplication with carcinoma.
