Pathology
*Department of Pathology, Washington University, St Louis, Missouri †Departments of Pathology ‡Urology, The Ohio State University Medical Center, Columbus, Ohio, USA.
Published: December 2013
Aim: Primary bladder urothelial carcinoma (UC) may involve the prostate with differing management depending on whether tumour is in situ or invades the prostatic subepithelium or fibromuscular stroma. We aim to understand challenges in reporting UC within prostate transurethral resection (TUR).
Methods: A retrospective review from 2007 to 2010 identified prostate TUR performed for primary bladder UC.
Results: 25.1% of cystoprostatectomy patients (60/239) had a prior prostate TUR; 129 patients had a prostate TUR for UC and 50.4% (65/129) were given a neoplastic diagnosis. Prostatic fibromuscular stroma was present in 84.6% of cases, with a comparable rate among surgeons. Diagnostic concordance of UC versus a non-neoplastic diagnosis was 96.7%, with rare cases initially diagnosed as non-neoplastic having in situ UC on review. Of reports with invasive tumour, 19.4% did not specify extent of invasion (e.g., bladder muscularis propria, prostate fibromuscular stroma) and 13.9% had discordant extent of invasion on review. Terminology typically used for bladder (lamina propria/muscularis propria) was found in 23.1% of reports without explicit reference to the bladder or prostate.
Conclusion: This study reveals difficulties in reporting UC within prostatic TUR specimens. We recommend documenting tumour extent and referencing the organ of origin if ambiguous anatomical terms are used.
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http://dx.doi.org/10.1097/PAT.0000000000000009 | DOI Listing |
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