case_images: PMC5314996_01
case_images: Cystoscopy diagnosis of the tumor. (A) Tumor site at the transplant ureteral orifice. (B) Retroflexed view of the tumor. (C) View of the bladder neck showing no visible malignancy.
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case_images: f1
case_images: A lesion that was highly suspicious for urothelial carcinoma was identified at the ureteral orifice (Fig. 1).
case_images: (A) High power view of the tubulovillous adenoma. It appears to be typical enteric or intestinal type adenoma with no high-grade dysplasia. (B) The lesion stains positive for beta-catenin as would be expected for a tubulovillous adenoma. The lesion also stained positive for CDX-2.
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case_images: f2
case_images: Analysis of the pathological specimens following the procedure revealed that the resected lesion at the conduit site was not a urothelial carcinoma, but instead a tubulovillous adenoma (Fig. 2).
case_images: Follow-up cystoscopy showing recurrence of the tumor near the previous resection site.
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case_images: At this time a small tumor was noted near the previous site of resection but farther up the conduit (Fig. 3).
case_images: Follow-up cystoscopy showing no further recurrence of the tumor.
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case_images: f4
case_images: The patient's most recent follow-up cystoscopy, however, shows no signs of regrowth (Fig. 4).