Indian J Med Microbiol Close
 

Figure 3: Type B2 thymomas characterized by (a) variable admixture of lymphocytes and epithelial cells (H and E, ×100). (b) When compared to B1 thymomas, the epithelial cells are much easily found (H and E, ×200). The epithelial cells may be in sheets or in groups (c) However, lymphocytes even if few are present (H and E, ×400). The cells have clear chromatin with prominent nucleoli. Mild anisonucleosis may be present (inset). However, overt pleomorphism or nuclear atypia is absent

Figure 3: Type B2 thymomas characterized by (a) variable admixture of lymphocytes and epithelial cells (H and E, ×100). (b) When compared to B1 thymomas, the epithelial cells are much easily found (H and E, ×200). The epithelial cells may be in sheets or in groups (c) However, lymphocytes even if few are present (H and E, ×400). The cells have clear chromatin with prominent nucleoli. Mild anisonucleosis may be present (inset). However, overt pleomorphism or nuclear atypia is absent