Atypical lipomatous tumors of the tongue: report of six cases.

The occurrence of liposarcoma in the tongue is rare with only 34 cases published so far. We report six new cases of atypical lipomatous tumor (ALT) of the tongue, and detection of mdm-2 and CDK4 expression by immunohistochemistry and fluorescence in situ hybridization (FISH), respectively, was performed. The series comprised three males and three females, aged 11-78 years.