Sinonasal tract mucosal melanoma.

Thompson LD.
Ear Nose Throat J. 2014 Oct-Nov;93(10-11):E49-50.
FIRST PARAGRAPH: Mucosal melanoma is a neural-crest–derived neoplasm that originates in melanocytes and demonstrates melanocytic differentiation. Exposure to formalin and ultraviolet light are known etiologic factors; another possible factor is exposure to radiation. Approximately 15 to 20% of all skin melanomas develop on the head and neck, but less than 1% of all melanomas develop in ocular or mucosal sites, including the sinonasal tract.
PubMed ID: 25397394
Article Size: <1 MB