PMC5314996_01
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.
fig-1.jpg
PMC5314996_01_fig-1.jpg
f1
A lesion that was highly suspicious for urothelial carcinoma was identified at the ureteral orifice (Fig. 1).
(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.
fig-2.jpg
PMC5314996_01_fig-2.jpg
f2
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).
Follow-up cystoscopy showing recurrence of the tumor near the previous resection site.
fig-3.jpg
PMC5314996_01_fig-3.jpg
f3
At this time a small tumor was noted near the previous site of resection but farther up the conduit (Fig. 3).
Follow-up cystoscopy showing no further recurrence of the tumor.
fig-4.jpg
PMC5314996_01_fig-4.jpg
f4
The patient's most recent follow-up cystoscopy, however, shows no signs of regrowth (Fig. 4).