[Inverted papilloma. Report of two cases and bibliographic review].

OBJECTIVE

Inverted papilloma is a rare polypoid lesion of the urothelium, known as a different entity since 1963. Not many more than 100 cases have been published. Although its malignant potential is still unknown, several scientific publications have noted it.

METHODS

We report to cases of inverted papilloma and perform a detailed bibliographic review.

RESULTS

Both patients were diagnosed by the Pathology Department and entered periodic follow-up visits, being free of recurrence at 24 and 18 months respectively.

CONCLUSIONS

The possibility that inverted papilloma is a lesion with malignant potential should be considered in every case, and we suggest that patients with this diagnosis should enter a follow-up protocol like any bladder neoplasia.