[ XXXX : a report of 2 cases and review of 163 cases in Japan].

@entity66 @entity5 @entity409 @entity786 @entity4316 @entity243 @entity1891 @entity27418
Two cases of @entity27418 are reported. Case I was a 71-year-old-male presenting with a mass in the left abdomen. On X-ray examination, a large extrarenal @entity5 was found in the left retroperitoneal space. The @entity5 appeared to invade the psoas muscle and the aorta. Exploratory laparotomy was carried out. The histological diagnosis of the @entity5 was @entity243 . He died of the disease. Case 2 was a 44-year-old-male who presented with a mass in the left abdomen. On X-ray examination, a large @entity5 was found in the left retroperitoneal space, and left kidney and the descending colon were markedly displaced by the @entity5 . Excisional surgery was carried out. The @entity5 was almost completely removed. The histological diagnosis was @entity243 . A combination chemotherapy ( @entity4316 , @entity1891 , @entity786 ) was started. but soon switched to radiation therapy because of @entity409 . Four months following the operation, there is no evidence of @entity66 . One hundred sixty three cases of @entity27418 reported in Japan are reviewed.
