Paneth Cell-Like Component in Prostate Cancer - Case Report.

Prostate adenocarcinoma with Paneth cell-like neuroendocrine differentiation is a rare entity. Foci of scattered cells and small clusters are found in the majority of described cases, although cases with predominant Paneth cell-like features have also been recorded. These cells contain eosinophilic cytoplasmic inclusions and lack androgen receptors, and are consequently immune to hormone therapy. It is, therefore, important for pathologists to recognize them. According to literature, clinical outcome depends on the standard grading of the conventional prostate cancer component. We report a case of a 54 year-old patient with prostatic adenocarcinoma showing Paneth cell-like neuroendocrine differentiation.