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Clinicopathologic Spectrum of Secondary Solid Tumors of the Prostate of Nonurothelial Origin

American Journal of Surgical Pathology(2022)

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摘要
Secondary involvement of the prostate by urothelial or hematolymphoid neoplasms is relatively common and well-described. In contrast, less is known about the clinicopathologic spectrum of secondary solid tumors of the prostate of nonurothelial origin. This study evaluated a series of secondary nonurothelial solid tumors of the prostate diagnosed at 21 institutions. Eighty-five patients with a median age at diagnosis of 64 years were included. Sixty-two patients had clinically manifest disease (62/85, 73%), 10 were diagnosed incidentally (10/85, 12%), and 13 (13/85, 15%) had no detailed clinical data available about symptomatology at presentation. Among patients with clinically manifest disease, the most common symptoms and signs were lower urinary tract symptoms (either obstructive of irritative; 36/62, 58%), abdominal or pelvic pain or discomfort (16/62, 26%), and hematuria (12/62, 19%). Metastasis and direct invasion occurred at roughly similar frequencies (47% vs. 42%) in this series, and in 11% of the cases, the mechanism of spread to the prostate was unclear/uncertain. Overall, among tumors with confirmed sites of origin, the most common primary sites were gastrointestinal tract (53/85, 62%), lung (9/85, 11%), skin (6/85, 7%), and testis (4/85, 5%). Among metastases, the most common tumor types were lung carcinomas (9/40, 23%), colorectal adenocarcinomas (7/40, 18%), melanoma (6/40, 15%), and germ cell tumors (6/40, 15%). This study demonstrated that secondary involvement of the prostate by solid tumors of nonurothelial origin is commonly symptomatic and that the most frequent sites of origin are the gastrointestinal tract, lung, skin, and testis. These findings are worth considering when lesions with unusual cytomorphology and/or architecture are encountered in prostate specimens.
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关键词
secondary solid tumors,prostate,clinicopathologic spectrum
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