Abstract
Spontaneous regression of a malignant tumor is an exceptional phenomenon. A 56-year-old woman with liver cirrhosis related to chronic hepatitis C presented with a liver tumor. Partial regression of a hepatocellular carcinoma was diagnosed by imaging studies that showed progressive diminution of the size of the tumor and changes in the tumor markers. However, because of the persistence of the tumor and uncertainty in the diagnosis we recommended surgery. A hepatectomy was performed and a hepatocellular carcinoma moderately differentiated was found. The patient is now doing well and without any evidence of recurrence at 25 months after surgery. We found 61 case reports that have been published from 1982 to September 2006, with apparently spontaneous regression of hepatocellular carcinoma. The precise mechanism regarding the spontaneous regression of this tumor is not fully understood, either ischemia due to rapid growth of the neoplasia or particular inflammatory and immunologic mechanisms may be involved in the regression of the hepatocellular carcinoma.
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