腹壁原発の悪性線維性組織球症の１例

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  • A CASE OF MALIGNANT FIBROUS HISTIOCYTOMA IN THE ABDOMINAL WALL

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Malignant fibrous histiocytoma (MFH) in the abdominal wall is extremely rare. The authors present here such a case.<br> An 84-year-old woman was admitted to the institution because of a right upper abdominal mass. After admission she underwent ultrasound scan, CT scan, Ga scintigraphy and barium enema. CT and ultrasound scans showed a mass sized about 15cm in the right upper abdominal wall. Barium enema showed that the ascending colon was compressed by the mass. Ga scintigraphy revealed accumulation of isotope where was correspondent with the tumor location. We suspected that this mass was a myogenic or neurogenic tumor and performed operation under general anesthesia. The tumor was arisen from the abdominal wall with central necrosis and resected with enough surgical margin of normal tissue. It was diagnosed as MFH with HE and immunological stainings. As of 10 months after the operation, no reccurence or metastasis has accurred.<br> MFH is the most frequent malignant tumor of the soft tissue and often recurs and metastasizes. It is common in the retroperitoneum and extremities but is extremely rare in the abdominal wall. Further strict observation would be required. This rare case of MFH of the abdominal wall which has a high malignant potential and presents difficulty in diagnosis is reparted, together with a review of the literature.

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