We report a 61-yr-old woman with acute circulatory failure from spontaneous splenic rupture with decompensated liver cirrhosis complicating large hepatocellular carcinoma exposed on the right liver surface. On admission, the patient was tentatively diagnosed as having rupture of the hepatocellular carcinoma, and she died 15 hours after admission despite blood transfusion. Autopsy revealed that the origin of the intraperitoneal hemorrhage was a ruptured spleen. According to a MEDLINE search of the English-language literature published between 1966 and March 1998, this is the first reported case of spontaneous splenic rupture in a patient with hepatocellular carcinoma without splenic metastasis.