Thymic Carcinoma : Well-diff. Non-Keratinizing Epidermoid CA

Comments:
High-power view of non-keratinizing epidermoid carcinoma. Malignant epithelial tumors of the thymus have to be distinguished from thymomas and pulmonary tumors invading thymus. Presence of CD5 and CD70 favors thymic carcinoma over thymomas and tumors of non-thymic origin.