Abstract
A 50-year-ld male potator had taken cyanamide 150mg daily as abstinence therapyfor 5 months. Eighteen months after discontinuation of cyanamide, he was admitted to ourhospital because of abnormal liver function tests despite continuing abstinence. Laparosocopic finding ob admission showed a whitish liver with irregu.lar surface. Biopsy specimensof th.e liver showed a typical ground glass appearance leading to a diagnosis of cyanamide-induced liver injury. Sixteen months later elevated aminotransferases returned to normalwithout treatment, and liver biopsy revealed marked regression of ground glass apperance.