Diagnostic Features and Subtyping of Thymoma Lymph Node Metastases
Figure 1
(a) Case 1, HE, 200x. B3 thymoma metastasis in the lymph node. EC with scant cytological atypia are seen forming sheets and palisades around vessels. Two perivascular spaces (PVS) are seen. (b) Case 3, HE, 50x lymph node partial involvement by metastatic B2 thymoma. The subcapsular sinus is partially preserved. The immature T-lymphocyte-rich metastasis of B2 thymoma is seen on the right, whereas residual lymph node B cell follicles and T-cell areas are seen on the left.
