Urothelial papilloma
A urothelial papilloma is a rare, noncancerous tumor found within the urinary tract.
Clinical Presentation
[edit]The most common presenting symptom is hematuria (blood in urine). The average age at which it occurs is 46 years old.
Morphology and Histology
[edit]The tumor is made of a fibrovascular core covered by seemingly normal urothelium tissue. Under microscope, papillary (finger-like) fronds can be seen that feature occasional branching, but no fusion.
Genetic Associations
[edit]The tumors are diploid (contain two sets of chromosomes). They commonly show FGFR3 mutations.[1]
References
[edit]- ^ "Pathology of Urinary Bladder Urothelial Papilloma: Definition, Clinical Features and Imaging, Gross and Microscopic Findings". 2023-12-19.
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