The diagnostic challenges of differentiating metastatic extramammary Paget disease and prostatic adenocarcinoma: A case report and review of the literature

Extramammary Paget disease (EMPD) is a rare dermatologic malignancy with a high rate of recurrence and increased risk for developing secondary malignancies. We present a 74-year-old male with previously resected primary EMPD who presented with widespread PSMA-avid lesions without prostatic uptake, a...

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Bibliographic Details
Main Authors: Gregory Palmateer, Edouard H. Nicaise, Jatin Gandhi, Taylor Goodstein, Michelle Sheng, Kenneth Ogan, Omer Kucuk, Melinda Yushak, Martin G. Sanda, Keith A. Delman, Viraj Master
Format: Article
Language:English
Published: Elsevier 2024-11-01
Series:Urology Case Reports
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Online Access:http://www.sciencedirect.com/science/article/pii/S2214442024002298
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Summary:Extramammary Paget disease (EMPD) is a rare dermatologic malignancy with a high rate of recurrence and increased risk for developing secondary malignancies. We present a 74-year-old male with previously resected primary EMPD who presented with widespread PSMA-avid lesions without prostatic uptake, an elevated PSA >100, and a negative prostate biopsy. Based on this and immunohistological staining, recurrent EMPD was suspected. However, after additional staining and reexamining their clinical presentation, metastatic prostate cancer without a detected primary lesion is more probable. This case highlights the diagnostic challenge variable expression of shared biomarkers found in EMPD and prostate cancer present to clinicians.
ISSN:2214-4420