[A case of renovascular hypertension due to chondrosarcoma arising from lumbar vertebrae]

A 35-year-old man visited our clinic with the chief complaint of headache and an upper abdominal mass. Renal vein renin activity, drip infusion pyelogram, GT scan and selective renal angiogram demonstrated a retroperitoneal tumor and right renovascular hypertension. Thus tumor extirpation and right nephrectomy were performed. After nephrectomy, blood pressure was corrected within the normal range. Histologically the tumor was diagnosed to be chondrosarcoma and there was no lesion in the wall of the right renal artery. This case had secondary chondrosarcoma arising from the first and second lumbar vertebrae and produced renovascular hypertension due to compression of the tumor.