mucosal melanoma
Rare melanoma arising from mucosal surfaces of the head and neck, distinct from cutaneous melanoma.
Full Definition
Mucosal melanoma is a rare and aggressive form of melanoma that arises from melanocytes in the mucous membranes of the head and neck region, most commonly the sinonasal cavity and oral cavity. Unlike cutaneous melanoma, mucosal melanomas are not associated with sun exposure and have different molecular characteristics. They typically present at advanced stages due to their hidden anatomical locations and non-specific symptoms. The prognosis is generally poor compared to cutaneous melanoma, with limited response to traditional treatments. Recent advances in immunotherapy and targeted therapy have shown promise for this challenging malignancy.
Usage
Usage note: Always distinguish from cutaneous melanoma in documentation.
In Context
- "The nasal cavity biopsy revealed mucosal melanoma with heavy pigmentation and mitotic activity." — Pathology report
- "Mucosal melanoma requires immunohistochemical confirmation with melanoma markers due to its rarity." — Diagnostic protocol