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Prostate

Benign lesions/conditions

Urethral polyps

Reviewers: Monika Roychowdhury, M.D., (see Reviewers page)
Revised: 21 July 2012, last major update July 2012
Copyright: (c) 2003-2012, PathologyOutlines.com, Inc.

General
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● Common cause of hematuria in young adults
● Benign, although prostatic adenocarcinoma can also present as a urethral polyp (Pathology 2007;39:476)

Treatment
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● Transurethral fulguration

Gross description
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● Single, villous, polypoid lesions in verumontanum and posterior-lateral urethra (Am J Clin Pathol 1975;63:343, Am J Surg Pathol 1983;7:351)

Micro description
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● Tall columnar cells of prostatic origin, may have nephrogenic (adenomatoid) appearance
● May coexist with carcinoma
● Papillary projections often contain prostatic stroma and glands
● Broad fingerlike projections differ from delicate fibrovascular cores of papillary urothelial carcinoma

Micro images
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Various images

Cytology images
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● Presence of clusters of benign columnar cells in urine (Diagn Cytopathol 2003;29:356)

Cytology images
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Various images

Positive stains
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● PSA, PAP

Cytology description
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● Bland columnar cells with uniform oval nuclei (Arch Pathol Lab Med 2000;124:1047)

Differential diagnosis
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● Villous polyps: dysplastic epithelium resembles colonic adenomas, are actually papillary prostatic duct adenocarcinomas

End of Prostate > Benign lesions/conditions > Urethral polyps

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