Primary Prostatic Carcinoma With De Novo Diffuse Neuroendocrine Differentiation

Autor: Paul Manohar, Samson W. Fine, Christopher Mow, Laurence A. Galea
Rok vydání: 2021
Předmět:
Zdroj: Int J Surg Pathol
ISSN: 1940-2465
1066-8969
DOI: 10.1177/10668969211035844
Popis: The 2016 World Health Organization classification of prostate cancer with neuroendocrine (NE) differentiation includes NE cells in usual prostate cancer, adenocarcinoma with Paneth cell-like NE differentiation, well-differentiated NE tumor (carcinoid), small cell NE carcinoma, and large cell NE carcinoma. In this article, we report a rare case of primary prostatic carcinoma with de novo diffuse NE differentiation presenting with bilateral hydronephrosis in a 79-year-old man. This case did not fit into any of the existing classifications. The clinical, radiological, morphological, and immunohistochemical findings and response to androgen deprivation therapy (ADT) are presented. The proposed pathogenesis of NE differentiation via transdifferentiation from conventional prostatic adenocarcinoma whereby genomic alterations, coupled with ADT can induce lineage plasticity resulting in NE differentiation is described.
Databáze: OpenAIRE