Fig. 3From: Resected case of giant cystic thymoma with spontaneous intracystic hemorrhagea, b The pathological findings showed a fibrotic cyst wall; the cyst was filled with necrotic tissue. The slight proliferation of lymphocytes was confirmed in the necrotic tissue and around the cyst wall (hematoxylin and eosin staining). c The tumor was diagnosed as type B1 cystic thymomaBack to article page