PMC5148772_01
20x magnification hematoxylin and eosin stain of pelvic lymph node; atypical cells initially diagnosed as metastatic cancer are noted in the sub-capsular region (box).
gr1.jpg
PMC5148772_01_gr1.jpg
fig1
There was a 3 mm focus of papillary and epithelioid-appearing cells in a single node in the right pelvic lymph node packet (Fig. 1).
20x Magnification cytokeratin IHC; the atypical cells are positive for the epithelial and mesothelial marker pancytokeratin (box).
gr2.jpg
PMC5148772_01_gr2.jpg
fig2
Immunohistochemical staining (IHC) for pancytokeratin was interpreted as positive (Fig. 2), leading to a diagnosis of metastatic prostate carcinoma.
20x Magnification calretinin IHC; the atypical cells are positive for the mesothelial marker calretinin (box).
gr3.jpg
PMC5148772_01_gr3.jpg
fig3
IHC stains were positive for Calretinin (Fig. 3) Stains for PSA and NKX3.1 were negative.