Urothelial carcinoma involving the ureteral orifice: a clinicopathologic analysis of 93 cases.

Abstract:

:Although tumors involving the bladder and ureter have been well described, there are only few studies in the pathology literature specifically analyzing tumors involving the ureteral orifice (UO). A search was performed for biopsy and resection specimens (transurethral resection, radical cystectomy/cystoprostatectomy, nephroureterectomy and bladder cuff resection) of urothelial carcinoma (UCa) involving the UO. Ninety-three cases were identified. Sixty-two (67%) patients were male. Mean patient age was 71 years (range, 43-91 years). Forty-two of 93 (45%) cases were invasive UCa (41 high-grade UCa; 1 low-grade UCa); 17/42 (40%) were invasive into muscularis propria. Tumor laterality was as follows: right side, 43 (46% of cases); left side, 41 (44%); bilateral, 4 (4.5%); and in 5 cases (5.5%), the laterality was not specified by the urologist. Seven cases of UCa with variant histology were also identified. Five patients had lymph node (LN) metastasis at the time of resection, and another 3 presented with LN or distant metastasis after resection (range, 4-38 months). Although this study focused primarily on the index tumor involving the UO (Group 1 cases are those with only UO involvement), in 70/93 (75%) cases (Group 2 cases), at least one other tumor was located at another site within the bladder. The fact that the majority of cases (75%) had tumors located at other sites of the bladder, emphasizes that careful examination of the UO needs to be performed by both urologists and pathologists when examining cases of UCa of the bladder.

journal_name

Hum Pathol

journal_title

Human pathology

authors

Annan AC,Stevens KA,Osunkoya AO

doi

10.1016/j.humpath.2017.04.018

subject

Has Abstract

pub_date

2017-07-01 00:00:00

pages

101-106

eissn

0046-8177

issn

1532-8392

pii

S0046-8177(17)30138-7

journal_volume

65

pub_type

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