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Inverted Papilloma of the Urinary Bladder: 15-Year Review Study

This study presents a 15-year review of 44 patients with inverted papilloma of the urinary bladder, focusing on clinical presentations, recurrence risks, and their association with transitional cell carcinoma. The results indicate a low recurrence rate and no subsequent development of transitional cell carcinoma. Histological findings suggest cystoscopic surveillance may not be necessary in cases without associated transitional cell carcinoma. References support the study's conclusions.

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Inverted Papilloma of the Urinary Bladder: 15-Year Review Study

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  1. No. 213 Inverted papilloma of the urinary bladder: A 15- year review CC NGO, KC WONG, TY CHAN, C YU, PSK CHU, CW MAN Urology, Department of Surgery, TuenMun Hospital, HKSAR Posters Proudly Supported by: Introduction Clinical significance, appropriate management and follow-up strategy of inverted papilloma (IP) of the urinary bladder are not known. • Results • A total of 44 patients (41 male, 3 female), mean aged 60.8 years (range 32-89). • Mean follow up period of 58.1 months (range 6-180). • The most common clinical presentation was macroscopic haematuria, found in 27(61.4%)patients. • Atypical cells in urine cytology were present in 10 (22.7%)patients while no patient had urine cytological findings suspicious of malignancy. • All IPs were solitary lesion, with a mean size of 16.6mm (Range 2-40). • The most commonly located in the bladder neck in 23 (52.3%)patients. • After transurethral resection, recurrence of IP was noted in 1 (2.3%) patient at 42 months at a different location in the bladder. • Of the 44 patients, 2 (4.5%) patients had a previous history of transitional cell carcinoma of the urinary bladder, 3 (6.8%) had synchronous transitional cell carcinoma of the bladder. • Upon follow-up, no subsequent development of transitional cell carcinoma was noted in our patients. Aim To review retrospectively the following parameters of urinary bladder inverted papilloma (IP) treated in our center: clinical presentations; risks of recurrence after treatment and their association with transitional cell carcinoma (TCC). • Methods • From January 1997 to December 2011, clinical data of all patients with IP were reviewed. • Histopathologicaldiagnosis was made according to the criteria defined by Henderson. Conclusions IPs co-exist with transitional cell carcinoma. However no subsequent development of TCC is demonstrated. In histologically proven IP with no associated TCC, cystoscopic surveillance may not be necessary. References Inverted papilloma of urinary bladder: is long-term cystoscopica surveillance needed? A single centre experience. H Hoet al. UROLOGY 68: 333-336, 2006 Clinical studies on inverted papilloma of the urinary tract: Report of 48 cases and review of the literature. K Asano et al. Journal of Urology Vol. 170, 1209-1212, Oct 2003 Acknowledgements .

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