Hiromi INOUE¹, Yasuyoshi FUKUSHIMA², Tomikazu MIZUNO³

¹Department of Obstetrics and Gynecology Shonan Kamakura Medical Center, ²Department of Obstetrics and Gynecology Chigasaki Tokushukai Medical Center, ³Department of Radiology St. Lukes' International Hospital

キーワード : Omentum, Torsion, Female, Ultrasound

Torsion of the omentum is a relatively rare condition and because there are no characteristic findings, this disorder is misdiagnosed in over 90% of the cases (mostly as appendicitis). We will report on a subject with severe pain in an area lower than her previous McBurney scar. An ovarian torsion was first suspected but was ruled out by ultrasonography by a hyperechoic area apart from the right ovary. Later, it was proven to be an infarcted omentum by torsion.
Symptoms of an omental torsion seldom simulate those of an ovarian torsion. This condition, however, should be included in differential diagnoses of gynecological and obstetrical emergencies. It is noteworthy that ultrasonography plays an important role in making a correct preoperative diagnosis of the omental infarction by torsion.