Melanosis of the Urinary Bladder – A Case Report and Review of the Literature

Melanosis of the urinary bladder is very rare. It is characterized by the deposition of melanin within the vesical urothelium and/ or lamina propria without the presence of melanocytes [1]. It is a distinct pathological entity in its own right and is not directly related to other melanotic lesions such as melanocytic naevus, lentigo maligna or malignant melanoma. At present, melanosis of the bladder is of uncertain clinical significance and there are no clear guidelines for its management. To our knowledge, so far only 7 such cases are reported in the world literature [2-6]. We report the first case from the United Kingdom.