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BASICS IN DERMATOLOGIC SURGERY
Mucocutaneous melanoma: be careful.
Mucocutaneous melanoma of the lip is a rare and aggressive cancer that arises from the mucous membrane or the junction of the skin and mucous membrane of the lip. It is distinct from cutaneous (skin) melanoma and is often diagnosed at a later stage, making treatment challenging. Symptoms can include a sore that doesn’t heal, a growing lump, or a discolored patch that changes over time.

What it is:
A type of mucosal melanoma that can also involve the skin of the lip.
Develops from melanocytes (pigment-producing cells) that are located in the oral mucosa or the vermilion border (the pink part of the lip).
Symptoms to watch for:
A sore on the lip or in the mouth that does not heal.
A lump on the tongue or lip that is growing.
Bleeding from the mouth or a bleeding sore.
A discolored, flat, or slightly raised spot that may appear as a dark brown, gray, black, purple, or blue patch.
Pain or numbness in the lip or mouth.
Key characteristics:
Aggressive nature: It tends to be more aggressive than cutaneous melanoma and has a poorer prognosis, often due to late diagnosis.
Delayed detection: It is often painless in its early stages and can be mistaken for benign spots, leading to delayed detection.
Varied appearance: Lesions can vary in appearance, from flat pigmented patches to more raised, nodular lesions.
Diagnosis and treatment:
Diagnosis: A biopsy is the gold standard for diagnosis.
Treatment: The primary treatment is surgical excision to remove as much of the tumor as possible. Other treatments may include radiation therapy, chemotherapy, or immunotherapy, depending on the individual case.