Abstract
Benign symmetric lipomatosis (BSL) is a rare disease characterized by symmetric, diffuse proliferation of adipose tissue almost in the neck and upper trunk. Four BSL cases had been reported in Japan, all of which had been found in the posterior neck. This report presents an atypical case of BSL manifested in the tongue.
A lipoma-like tumor was observed in the bilateral borders of the tongue. The laboratory data were almost normal. He had suffered from apoplexy and alcoholism. A lingual biopsy was performed, and a diagnosis of BSL was made in terms of both the clinical and histological findings.
The discussion includes the clinical findings of BSL and differential diagnosis between lipomatosis and lipoma. Especially the differences of macro-and microscopic findings between lipomatosis and lipoma are emphasized.
