Fig. 2
From: Complete biochemical response after pulmonary metastasectomy in prostate adenocarcinoma
a (left) Hematoxylin and eosin stained cell block from nodule. This specimen reveals groups of malignant tumor cells with vacuolated cytoplasm consistent with prostate adenocarcinoma. b (right) Immunohistochemical stains were strongly positive for prostate-specific antigen (above) as well as NKX3.1, androgen receptor, and prostatic-specific acid phosphatase confirming prostatic origin