A Case of a Solitary Fibrous Tumor that Metastasized to the Liver 6 Years after Surgery

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  • 術後6年目に肝転移再発したS状結腸間膜原発胸膜外孤立性線維性腫瘍の1例
  • ジュツゴ 6ネンメ ニ カン テンイ サイハツ シタ Sジョウ ケッチョウ カンマク ゲンパツ キョウマク ガイ コリツセイ センイセイ シュヨウ ノ 1レイ

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Abstract

<p>A 66-year-old man was found to have a giant abdominal tumor on abdominal computed tomography (CT), and he underwent tumor resection. Histological examination of the resected specimen showed that the tumor was composed of spindle cells. Immunostaining was CD34(+) and STAT6(+). Therefore, the tumor was diagnosed as an extrapleural solitary fibrous tumor (EPSFT).</p><p>Six years later, abdominal ultrasound (US) showed a tumor in the liver. Recurrence of EPSFT was suspected, and subsegmentectomy of the liver was performed. The histopathological findings closely resembled the findings of the previously resected tumor ; therefore, recurrence of EPSFT was diagnosed. EPSFT is relatively rare, and moreover, there are few reports of liver metastasis of EPSFT. In this case, the original tumor was very large, and thus it was thought that there was a high potential for malignancy. Accordingly, the patient was followed for a long period of time, and recurrence of EPSFT was identified. This rare case of recurrence of EPSFT in the liver is reported along with a review of the literature.</p>

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