[Ureteral polyps: three case reports]

Area of Science:

• Urology
• Pediatric Urology
• Pathology

Background:

• Ureteral polyps are rare, and their clinical characteristics, particularly in comparison between pediatric and adult populations, require further investigation.
• Understanding the epidemiology and clinical presentation of ureteral polyps is crucial for diagnosis and management.

Observation:

• Three recent cases of ureteral polyps were observed, including one with multiple polyps.
• A review of 88 ureteral polyps reported in Japan (1970-1990) was conducted, categorizing them by age (children vs. adults) and multiplicity (single vs. multiple).

Findings:

• Pediatric ureteral polyps predominantly presented as multiple lesions, primarily in the left upper ureter, and were not associated with ureteral stones.
• Multiple adult ureteral polyps also frequently occurred in the left upper ureter and were rarely complicated by stones, mirroring pediatric cases.
• Single ureteral polyps and those in adults with ureteral stones showed different characteristics.

Implications:

• The observed similarities between pediatric ureteral polyps and multiple adult ureteral polyps suggest a potential common etiology, possibly related to congenital factors.
• These findings may guide future research into the pathogenesis of ureteral polyps and inform clinical diagnostic approaches.
• Further investigation into congenital influences on ureteral polyp development is warranted.