ArticleCureus2026
BK Polyomavirus-Associated Urothelial Carcinoma Presenting as Obstructive Uropathy in a Long-Term Lung Transplant Recipient.
Article in Cureus, 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A man in his 40s on long-term immunosuppression with bilateral lung transplantation due to cystic fibrosis presented to the hospital with dysuria and flank pain, initially attributed to pyelonephritis. Repeated computed tomography revealed progressive bilateral hydronephrosis unresponsive to ureteric stenting, an extensive bladder wall lesion with calcification, and retroperitoneal lymphadenopathy. A cystoscopic biopsy reviewed at a tertiary centre confirmed high-grade urothelial carcinoma with extensive glandular differentiation, positive for the SV40 antigen, consistent with BK polyomavirus-associated carcinoma (G3 T1 N3 M1a). Persistent hydronephrosis despite appropriately situated stents was the pivotal imaging finding, prompting reassessment for extrinsic malignant obstruction and bilateral nephrostomy insertion. This case highlights the diagnostic challenge of distinguishing malignancy from infection in immunosuppressed individuals through serial imaging.
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