[Spindle-cell thymoma (a histological and electron microscopic study)].

The paper describes 12 cases of spindle cell thymoma without myasthenia or any other syndromes such as hypogammaglobulinemia, hypoplasia of the red sprout of the bone marrow. In most patients the tumours were detected roentgenologically. Microscopic diagnosis of spindle cell thymoma is based on the detection in it of epithelial cell structures. In those cases where the tumours were represented by spindle cells alone, verification of the tumor was possible only by electron microscopic studies (the presence in the cells of tonofilaments, desmosomes and basal membrane).