Stage IA Vulvar Cancer AJCC v9

**Semantic type:** Neoplastic Process

**Definition:** Stage IA includes: T1a, N0, M0. T1a: Tumor measuring 2 cm or less in greatest dimension and with stromal invasion measuring 1mm or less. Note: Depth of invasion is measured from the basement membrane of the deepest adjacent tumor-free rete ridge to the deepest point of invasion. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 9th Ed.)

**Synonyms:** - Stage IA Vulvar Carcinoma AJCC v9