睾丸部(精系下部)に原発した滑平筋肉腫の1剖検例

A case of malignant myogenous tumor originated on the left spermatic cord of 49 aged man is presented. This tumor was found as a painless tumor in the testicular region about 7 years before the death of patient, and one year later it grew to a child-head sized tumor showing a rapid development. Clinically the tumor was diagnosed as a cancer of the testis and resected surgically. (Fig. 1) No metastasized tumor was recognized at that time. However, 3 years and a half later a new tumor appeared on the center of the heald wound. The relapsed tumor was resected again, but after about one year and a half a tumor reappeared on the same region (Fig. 4) accompaning with an extensive metastasis in the thoracic cavity. (Fig. 8) The patient died by heart failure caused by the metastasized tumors. Anatomical and histopathological observations revealed that this tumor was a leiomyosarcoma originated in the lower region of the left spermatic cord. The tumor tissues consisted of whorled masses of polymorphic spindel-shaped cells with lod-shaped mucleus similar to the immature smooth muscle cells. (Fig. 9 & 7)