A Case of a Solitary Fibrous Tumor of the Greater Omentum

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  • SENDA Takashi
    Department of Surgery, Fukaya Red Cross Hospital Department of General Surgery, Chiba University Graduate School of Medicine
  • ISHIKAWA Humihiko
    Department of Surgery, Fukaya Red Cross Hospital
  • OMOTO Hideyuki
    Department of Surgery, Fukaya Red Cross Hospital
  • NITTA Hiroshi
    Department of Surgery, Fukaya Red Cross Hospital
  • ITOU Hiroshi
    Department of Surgery, Fukaya Red Cross Hospital
  • KANEKO Kou
    Department of Pathology, Fukaya Red Cross Hospital
  • MIYAZAKI Masaru
    Department of General Surgery, Chiba University Graduate School of Medicine

Bibliographic Information

Other Title
  • 大網に原発した孤立性線維性腫瘍の1例
  • 症例 大網に原発した孤立性線維性腫瘍の1例
  • ショウレイ ダイモウ ニ ゲンパツ シタ コリツセイ センイセイ シュヨウ ノ 1レイ

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Description

We report a case of a solitary fibrous tumor originated in the greater omentum. A 45-years-old woman was referred to our hospital because of an abdominal mass detected through a medical check-up. Ultrasonography showed a 52-mm tumor at the right side of the descending colon. Abdominal enhanced computed tomography and abdominal angiography showed a hypervascular solid tumor and an artery branching from the right gastroepiploic artery fed the tumor. Laparoscopic surgery was conducted for a suspected mesenchymal tumor arising from the greater omentum. The hypervascular tumor was found to continue to the greater omentum partly, however, it had not infiltrated into the peritoneum and descending colon. The tumor with part of the greater omentum was removed. The resected specimen involved a multilobular grey-white tumor with the diameter of 5.5 cm. Histopathologically, the tumor consisted of spindle cells presenting a “patternless pattern”. Immunohistochemical staining was positive for CD34 and bcl-2 and negative for c-kit, S-100 protein, and desmin. The tumor was diagnosed as a solitary fibrous tumor of the greater omentum.

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