Cutaneous metastasis of bladder sarcoma: when should we consider this hypothesis? A review of the literature.

The incidence of cutaneous metastases is approximately 0.7 to 10%, while in metastases of urothelial origin the incidence is less than 1%. Transitional cell carcinoma is the most common of the genitourinary tract tumors. Sarcoma of the bladder is rare (0.3%). It can involve multiple clinical presentations, with a nodule being the most common. Diagnosis is made by a combination of medical history, clinical examination and histopathology. The treatment is surgical. The prognosis is very uncertain and depends on a multidisciplinary approach.