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Type B3 and C thymoma
Haematoxylin & Eosin (H&E)
62 years
62 years old man with a mediastinal tumor (12cm).
Tumor with solid growth. Parts of the tumor are composed of epithelial cells with cytologic features of malignancy and absence of organotypic thymic features (Type C thymoma). Other parts of the tumor are composed of large epitheloid cells admixed with scant lymphocytes (Type B3 thymoma).
Type C thymoma resembles carcinoma at other sites. The diagnose requires demonstration of absence of tumor elswhere clinically and radiographically.
Huber Bettina
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