Diagnosis of thymoma by needle biopsy.

摘要: One cutting needle biopsy specimen and six fine aspiration specimens of thymomas were studied in order to define diagnostic criteria for this entity material. Two the cases demonstrated a mixed pattern epithelial cells lymphocytes while predominated four one. Tumors composed conspicuous admixture benign-appearing mature easily diagnosed. Neoplasms primarily one cell type also displayed distinctive cytologic features that correlated with histopathologic appearance resected tumors permitted diagnosis. Immunocytochemical demonstration keratin T6 proved useful confirming biphasic cortical thymocytes is characteristic thymoma.