Abstract
Congenital mesoblastic nephroma is a kind of the renal hamaltoma. It occurs in a frequency of 7% of all renal tumors in children, but is so rare in adults that only 5 domestic and 3 foreign cases are seen in the literature. Congenital mesoblastic nephroma is a benign tumor clinically and histologically, however, it is difficult to distiguish it from renal cell carcinomas, based on symptoms and various imagings. In this paper an extremely rare case of this disease in an adult is reported, with some discussion on its clinical and pathological features from a review of the literature.
A 41-year-old woman was seen because of a left upper abdominal tumor. The patient was suspected to have a renal cell carcinoma from abdominal ultrasonography, DIP, abdominal CT, and angiography of the kidney. Left nephrectomy and lymph node dissection surrounding the abdominal aorta and vena cava inferior were carried out. Histopathologically it was diagnosed as congenital mesoblastic nephroma.
