Abstract

CASE REPORT

Fibroma of the Omentum Resembling an Ovarian Tumor in the Pelvis

Masanori Ono, Kyoko Tanaka, Nana Ikezawa, Yusuke Kobayashi, Yoko Inoue, Megumi Yokota, Satoko Matsumura, Ichiro Uehara,
Yoshihisa Hattori, Takashi Kurahashi, Tetsuya Shimada
and Hiroyuki Nakagawa

We would like to report the case of a patient with fibroma of the omentum that resembled an ovarian tumor in the pelvis. Since primary tumours of the omentum are rare, there is a paucity of information about the biology of such tumors in the basic texts and literature. An ultrasound examination of the patient revealed a mass, likely of ovarian origin, which consisted of liquid and solid components. It was suspected to be a malignant ovarian tumor. However, laparotomy demonstrated it was an omental tumor. This case shows that it can be difficult to pre-operatively diagnose omental fibromas because of their close resemblance to ovarian tumors.