Treatment of thymoma with low-dose glucocorticoids before surgery for significant tumor shrinkage: A case report

Figure 2 Preoperative pathology. Preoperative pathology revealed a small amount of lymphoid tissue and epithelioid cells with necrosis. When combined with immunohistochemical results, which were consistent with thymoma, and considering that there was little tissue, it was recommended that specimens be further classified after surgery. The immunohistochemistry results were as follows: TdT (partial +), CD5 (partial +), CD20 (small +), CD3 (partial +), CK (AE1/AE3) (+), CK19 (+), p63 (+), Ki-67 (20% +), CDla (partial +), CD117 (individual +), CK (+), and p53 (minor +). HE: Hematoxylin and eosin.