RESUMEN
Diabetes mellitus is well known to be associated with various structural and functional liver abnormalities. If diabetic patients are accompanied by hepatomegaly or abnormal findings from a liver function test, the most common pathological findings are steatosis and glycogenosis. The steatosis is characterized by deposition of macrovesicular fat droplets in the hepatocytes, which is common in obese, type 2 diabetes mellitus. If macrovesicular steatosis is combined with mixed inflammatory infiltrate, without evidence of alcoholic hepatitis, the case could be diagnosed as nonalcoholic steatohepatitis (NASH). NASH has the possibility of progressing to cirrhosis. Secondary glycogenosis is common in uncontrolled type 1 diabetes mellitus, and is completely reversible. A 22-year-old male, with uncontrolled type 1 diabetes mellitus, was admitted with anorexia, nausea and right upper quadrant pain. Hepatomegaly and elevated aminotransferases were noted. He was diagnosed as diabetic glycogenosis using computed tomogram and liver biopsy. The hepato megaly and liver function test abnormalities were markedly improved with glycemic control