RESUMEN
The medullar thymoma is a rare and distinctive epithelial thymoma, a thymic tumor characterized histologically by a mixture of spindle epithelial cells and lymphoid cells. We are presenting this tumor to a 68 years old man, admitted at CCI, for a mediastinal tumor, treated by tumorectomy, for revealing the cytological, histological and immunohistochemical characteristic features. The surgical biopsy was prepared by using usual histological techniques and haematoxilin eosin and Van Gieson stainings. We are discussing the relation between the thymoma clinicopathological and prognostic features, resulting a clear correlation between histological type and clinical study. We also pointed the Muller-Hermelink thymoma histological subtypes and their correspondence with OMS histological types, reflecting realistically the thymoma clinical behavior.
