Final answer:
The most definitive treatment for invasive vulvar SCC is surgery.
Step-by-step explanation:
The most definitive treatment for invasive vulvar SCC (squamous cell carcinoma) is surgery. Surgery aims to remove the entire mass of the tumor, along with any affected lymph nodes. If the cancer is still localized, surgery can provide a cure. Even if the cancer has spread, surgery can help alleviate symptoms and prolong survival.