[Thymolipoma--a rare histological finding in patients with myasthenia gravis].

Over a 15-year period, thirteen thymolipomas are histologically demonstrated in a total of 182 myasthenia gravis patients undergoing thymectomy. The incidence of this rare histological diagnosis in the aforementioned group appears to be considerably higher than the one so far reported in the pertinent literature. In the series reviewed men in advanced age prevail which is by no means typical of myasthenia patients. The postoperative results are very good, with not a single fatal outcome being recorded. There are basically three types of histological findings in thymolipomas--fat tissue alone, fat tissue with thymic tissue in involution, and fat tissue with thymic tissue.