Abstract
We experienced a case of leiomyosarcoma of the kidney. The patient was a 78-year-old man with pleural effusion at first admission. A malignant tumor in the left kidney was identified by abdominal CT scan and echogram. After 3 months, he was readmitted with multiple tumors of the lung and pleural effusion. Lung metastasis of the kidney tumor was suspected. The patient died of pneumonia on the 73rd day in the hospital. A 5 × 4 × 4 cm tumor with a definite margin was discovered in the lower portion of the left kidney during histopathology. From the HE-stained cell texture of the kidney tumor, spindle shaped tumor cells containing stick-like nuclei full of chromatin, were grouped in a line, the kidney tumor was diagnosed as leiomysarcoma. Diffuse metastasis was detected in the left lung, pleura, right kidney, 3rd and 9th thoracic vertebrae, the endocardium, etc. There was also evidence of early cancer of the stomach (well differentiated adenocarcinoma, ha) . Leiomyosarcoma is a malignant tumor of the kidney with few clinical symptoms. It is clinically rare (1-3.3% of all malignant kidney tumors) . This was a case of double stomach cancer. Double penile cancer was reported by Kojima et al.
