ArticleUrology case reports2026
First reported case of peri-ureteric urothelial carcinoma.
Article in Urology case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
We report the first documented case of peri-ureteric, low-grade urothelial carcinoma presenting over two decades after initial non-muscle-invasive bladder cancer (NMIBC). A 75-year-old male, treated with intravesical BCG, remained recurrence-free for ten years before developing a low-grade bladder recurrence after ten years. Surveillance imaging revealed left hydronephrosis and peri-ureteric thickening despite normal ureteroscopy and negative cytology. CT-guided biopsy confirmed low-grade papillary urothelial carcinoma external to the ureter. Robot-assisted nephroureterectomy showed a non-invasive tumour encasing, but not invading, the ureter, suggesting origin from ectopic urothelial nests. This rare presentation highlights a surveillance blind spot for extraluminal urothelial carcinoma.
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