腎脂肪肉腫の1例

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A66-year-old housewife came to the hospital complaining of fever and pain in the left flank. IP, RP, PRP, renal angiography and reno-scanning were performed. A left renal tumor was diagnosed because pooling and avascularity were found in the renal angiography and a cold spot in the left renal lower polor by reno-scanning. A left nephrectomy was then carried out. The specimen was 270 g in weight and measured 15 cm × 7 cm × 5 cm. Differentiated liposarcoma was seen in pathological findings. In an electron microscope study, fat droplet and inclusion body of microtubuli (said to be characteristic of liposarcoma in other organs) were observed. Renal liposarcoma is an extremely rare tumor growing from mesenchymal tissue of the kidney. To date, 119 cases (including this one) with renal sarcoma have been reported bibliographically; of these only 17 cases were renal liposcarcoma. Renal liposarcoma was found mostly in people in their four and five decades. It occurred in women 3 times more often than in men, and was found more frequently in the left side. Both tumors and pain were common symptoms and hematuria was rare, Though in many cases there have been complications with tuberous sclerosis, that was not so in this case.
社団法人日本泌尿器科学会の論文