C43.4

Clinical Causes: Prolonged exposure to ultraviolet (UV) radiation from the sun or tanning beds. Presence of numerous or atypical moles on the scalp or neck. Genetic factors, including family history of melanoma or other skin cancers. Fair skin, light hair, and light eye color that are more susceptible to UV damage. Previous skin injuries or burns in the affected areas. Immunosuppression or compromised immune system conditions.

Key Symptoms: Changing moles in size, shape, or color on the scalp or neck. The appearance of a new, unusual pigmented lesion. Irregular borders or uneven color within a mole or lesion. Persistent itching, tenderness, or bleeding in a pigmented area. A mole or spot that looks different from other moles (the ‘A-B-C-D-E’ criteria: Asymmetry, Border irregularity, Color variation, Diameter over 6 mm, Evolving in appearance). Scalp or neck lesions that are raised or crusted. In some cases, ulceration or open sore in the affected area.

Diagnosis Path: Dermatological examination focusing on suspicious lesions. Dermoscopy, a non-invasive technique that provides a magnified view of skin structures to assess lesion characteristics. Biopsy of the lesion, which involves removing a small tissue sample for laboratory analysis to confirm malignancy. Imaging studies such as ultrasound, CT scans, or MRI might be ordered to check for local spread or metastasis if indicated.

Treatment Protocols: Surgical excision: The primary treatment involves surgically removing the tumor along with some surrounding healthy tissue to ensure complete removal. Sentinel lymph node biopsy: Performed to evaluate whether the cancer has spread to nearby lymph nodes. Immunotherapy: May be recommended for advanced disease to help the immune system recognize and attack melanoma cells. Targeted therapy: Utilized for melanomas with specific genetic mutations. Radiation therapy: Sometimes used in cases where surgical removal isn't feasible or to treat metastatic sites. Chemotherapy: Less commonly used but might be indicated for widespread or metastatic disease. Follow-up care: Regular skin checks and imaging are essential for detecting recurrences or metastasis early.