• Kentaro Imanishi, Norichika Iga, Daisuke Mizuno, Hideyuki Nishi, and Shinichiro Miyoshi.
• Department of Surgery, Okayama Rosai Hospital, 1-10-25 Chikkomidorimachi, Minamiku, Okayama 702-8055, Japan.
• J Surg Case Rep. 2021 Jun 1; 2021 (6): rjab237.

AbstractOmental torsion, a rare cause of acute abdomen in children and adults, is difficult to correctly diagnose before surgery because it mimics the common causes of acute surgical abdomen. We present a case of greater omental torsion that was diagnosed by laparoscopy. A 37-year-old man presented with right lower abdominal pain and was suspected to have appendicitis. Blood tests revealed elevated C-reactive protein and white blood cell count, whereas computed tomography revealed a nodular mass and high-density lesions in the fat tissue. As the patient's abdominal symptoms were severe and a clear diagnosis could not be made, we performed exploratory laparoscopy. Laparoscopy revealed omental torsion, and an omentectomy was performed. The patient's pain had significantly reduced post-surgery, and post-operative recovery was uneventful. Thus, laparoscopic examination is useful for accurately diagnosing omental torsion and is less invasive than surgery.Published by Oxford University Press and JSCR Publishing Ltd. © The Author(s) 2021.

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