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10 min read•Sep 25, 2026

Melanoma: Cutaneous & Mucosal Subtypes, Acral Lesions, SLNB Staging & Immunotherapy

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Aryaka Sikdar | Proofreading Manager

Carcino Research & Clinical Advisory

Melanoma is an aggressive skin tumor originating in melanocytes. In India, 70-80% of cases are Acral Lentiginous Melanoma (soles, palms, nails) and Mucosal Melanoma.

Types of Melanoma

• Acral Lentiginous Melanoma: Soles of feet, palms, under nails.

• Superficial Spreading Melanoma: Sun-exposed skin.

• Nodular Melanoma: Aggressive nodule anywhere on body.

• Lentigo Maligna Melanoma: Sun-damaged face/scalp in elderly.

• Mucosal Melanoma: Oral cavity & genital tract.

Symptoms & ABCDE Rule

Dark irregular lesion changing in size/color/shape, bleeding/itching, sole/palm lesions, lymph node swelling.

ABCDE Rule: Asymmetry, Border, Color, Diameter >6mm, Evolving.

Diagnostics: Excisional Biopsy (Breslow depth), Sentinel Lymph Node Biopsy (SLNB), CT/MRI/PET-CT.

Treatment: Surgical excision, Lymph node dissection, Immunotherapy (pembrolizumab, nivolumab), Targeted BRAF/NRAS, Radiotherapy, Chemotherapy.

Frequently Asked Questions (FAQs)

Citations & Medical References