Double Trouble Establishing Synchronous Primary Tumors of the Urothelium and Prostate by Immunohistomorphology

A Report of Two Cases

Authors

  • David Jerome Ong The Medical City, Pasig City
  • Elizabeth Ann Alcazaren The Medical City, Pasig City
  • Jose Carnate Jr. The Medical City, Pasig City

DOI:

https://doi.org/10.21141/PJP.2020.06

Keywords:

immunohisotchemistry, PSA, prostatic adenocarcinoma, urothelial carcinoma

Abstract

Synchronous primary tumors of the urothelium and prostate are a diagnostic challenge among
pathologists. Differentiating carcinomas of urothelial and prostatic origin requires careful assessment of histomorphology coupled with ancillary studies such as immunohistochemistry stains (IHC) to support the diagnosis. We report two cases of adult patients who underwent transurethral resection of the prostate (TURP), with two distinct morphologies noted on routine H&E sections. After a panel of immunohistochemical stains (HMWCK, CK5/6, CK7, CK20, GATA-3, p63, NKX3.1, and PSA), both cases were signed out as papillary urothelial carcinoma and prostatic acinar adenocarcinoma. Correlation of histomorphology with an IHC panel consisting of cytokeratins (CK5/6, CK7, CK20), a urothelial marker (GATA-3), and at least two prostatic markers (PSA, NKX3.1) is recommended in such cases.

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Author Biographies

David Jerome Ong, The Medical City, Pasig City

Department of Laboratory Medicine and Pathology

Elizabeth Ann Alcazaren, The Medical City, Pasig City

Section Head. Anatomic Pathology

Department of Laboratory Medicine and Pathology

Jose Carnate Jr., The Medical City, Pasig City

Training Officer

Department of Laboratory Medicine and Pathology

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Published

03/26/2020

How to Cite

Ong, D. J. ., Alcazaren, E. A. ., & Carnate Jr., J. . (2020). Double Trouble Establishing Synchronous Primary Tumors of the Urothelium and Prostate by Immunohistomorphology : A Report of Two Cases. PJP, 5(1), 44–49. https://doi.org/10.21141/PJP.2020.06

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