[Melanoma metastasis to the brachial plexus and median nerve. A rare clinical case].

Melanoma is a malignant neuroectodermal tumor arising from skin pigment cells (melanocytes). Distant metastases and damage to the nervous system occur mainly at the later stages of disease. However, primary tumor may not be verified despite distant metastases in some cases. We present a patient with metastatic melanoma to the left median nerve and brachial plexus without clear primary lesion. This case describes surgical treatment of melanoma metastasis followed by median neuropathy.