What is the purpose of performing lymph node biopsy in melanoma management?

• A. To assess regional nodal involvement.
• B. To cure the disease.
• C. To replace primary tumor excision.
• D. To measure skin elasticity.

Answer: (A)

Evaluating regional nodal involvement is the main purpose. In melanoma, identifying whether the cancer has reached the nearby lymph nodes helps stage the disease and guides treatment decisions. A biopsy of the sentinel lymph node—the first node the tumor drains into—lets you determine if metastasis is present without removing many nodes. If the sentinel node is positive, it signals higher risk and can lead to further therapy choices, such as additional lymph node removal or adjuvant systemic therapy, to improve outcomes. This procedure provides essential prognostic information; it is not a cure by itself and it doesn’t replace the primary tumor excision. Measuring skin elasticity has no role in melanoma staging.