A Case of Retroperitoneal Liposarcoma with Inflammatory Pseudotumor

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Other Title
  • 炎症性偽腫瘍を併発した後腹膜脂肪肉腫の1例
  • エンショウセイ ギ シュヨウ オ ヘイハツ シタ アトバラマク シボウ ニクシュ ノ 1レイ

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Description

A 54-year-old man presented with pollakiuria and dysuria. Ultrasonography, computed tomography (CT), and magnetic resonance imaging (MRI) showed a retroperitoneal tumor 10 cm in diameter. Pathological examination of a transrectal biopsy specimen obtained from the patient revealed the presence of an inflammatory myofibroblastic tumor (IMT). The patient underwent surgical resection of the tumor. Histopathologically, the tumor was composed of 3 parts : the largest part was compatible with an inflammatory pseudotumor : the second part, well-differentiated liposarcoma : and the third part, a myxoid liposarcoma. He has been followed up for 14 months ; but there was no evidence of local recurrence of the tumor. We believe that the inflammatory pseudotumor complicated in repairing the inflammation arising from the liposarcoma.

Journal

  • Hinyokika Kiyo

    Hinyokika Kiyo 58 (2), 79-82, 2012-02

    泌尿器科紀要刊行会

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