Fig. 5
From: Immunohistochemical markers and the clinical course of adenosarcoma: a series of seven cases
Case 1. (a–d) Recurrent tissue biopsy of the retroperitoneal mass. (a) H&E staining. A mesenchymal component the same as the primary tumor without the epithelial component is observed. (b) ER and (c) PR are negative, and (d) p53 shows overexpression. (e) The MIB-1 proliferation index is 80% (original magnification × 400). ER: estrogen receptor; H&E: hematoxylin and eosin; PR: progesterone receptor