[Atypical lipoma, floret-like pleomorphic variant. A lipomatous lesion simulating a liposarcoma].
A case of submucous lump of the majus labium of a 56 year old female has reported. This is a composite lesion which shows a loose connectival texture and a high cellularity with spindle cells, multivacuolated cells of irregular shape and hyperchromatic nuclei; moreover, there are characteristic multinucleated floret-like cells. This is a particular variant of Atypical Lipoma defined as Pleomorphic Lipoma by Enzinger. Despite this ominous cellularity, the lesion is perfectly benign. The small size and the superficial site are the majors elements of good prognosis. In retroperitoneal localization lesions with similar histologic presentation and of major size show more severe prognosis and are classified as Low Grade Well Differentiated Liposarcoma.