A Very Rare Case of Neuroendocrine Carcinoma of the Bladder with Unusual Revelation "Skin Metastases": A Case Report

Neuroendocrine carcinoma of the bladder is a very rare tumor, accounting for no more than 1% of all bladder tumors. Its main characteristic is its poor prognosis, which is explained by its high metastatic potential. Classical metastatic sites are lymph nodes, liver and lung, but cutaneous localization is exceptional and can take on different non-specific clinical aspects. In our article, we report the case of a 66-year-old patient who was hospitalized for cutaneous nodules revealing very advanced bladder neuroendocrine carcinoma with lymph node, peritoneal and cutaneous metastases. The particularity of our case report is the very rare histological nature of the bladder tumor, as well as its mode of revelation (cutaneous metastases). In this work, we emphasize the importance of an exhaustive etiological assessment of any skin lesion evolving in a context of altered general condition.