Thymofibrolipoma. A histologic variant of thymolipoma

We report two cases of a thymic neoplasm showing abundant fibroconnective tissue with focal areas of fatty tissue. The two patients, a 9-year-old girl and a 32-year-old man, were found to have an anterior mediastinal mass on routine chest roentgenograms. Surgical resection was performed in both cases. Because of the histologic features shown by these neoplasms, we believe that these cases represent a variant of thymolipoma, and we have named it thymofibrolipoma.