2019-2 / FEBRUARY 25 (CONTRIBUTOR: JONATHAN EPSTEIN)
A 79 year old male underwent a TURP due to obstruction. The tumor was stained at the outside institution and was diffusely positive for high molecular weight cytokeratin and negative for PSA, PSAP, GATA3, synaptophysin, with a ki67 of 90%.
Click on the below thumbnails to enlarge photos.
What is the correct diagnosis?
a) Basal cell carcinoma of the prostate
b) Small cell carcinoma
c) Adenocarcinoma of the prostate, Gleason score 5+5=10 (Grade Group 5)
d) Urothelial carcinoma