Metastasis of Uveal Melanoma in Bladder: Presentation of Two Cases and Review of the Literature.

OBJECTIVE: Secondary urinary bladder tumors account for 2% of neoplasms in this location. Melanoma is the neoplasm that most frequently produces distant metastases in the bladder. Despite its low prevalence, it should be a possible diagnosis to consider facing urological symptoms, due to the existence of targeted therapies. METHOD: We present two cases of uveal melanoma metastasis in the bladder, their characteristics, and a review of the literature. RESULT: In this paper we present the histological characteristics and complementary techniques for the diagnosis of bladder metastases of melanoma and propose their inclusion among the possible differential diagnoses for bladder neoplasms. CONCLUSIONS: Given that there are currently targeted therapies against melanoma, the relevance of their inclusion in the differential diagnosis of bladder tumors stands out.