[Inverted papilloma of the bladder: diagnosis and course].

Objective: To analyse the diagnosis, treatment and clinical course of inverted papilloma of the bladder

Materials And Methods: Between January 1980 and January 2004, 12 patients with an inverted papilloma of the bladder were included, representing 0.36% of all bladder tumours treated over the same period.

Results: This series consisted of 10 men and 2 women with a mean age of 62 years (range: 42-83 years). The most frequent presenting complaint was macroscopic haematuria (10/12 cases), associated with signs of bladder irritation in 8 cases. This lesion was solitary and frequently located in the trigone (7/12 cases). An associated transitional cell carcinoma was diagnosed in 5 cases.

Conclusion: Inverted papillomas of the bladder are rare, benign tumours that can be associated with urothelial carcinoma, requiring rigorous surveillance.