Stage IB Vulvar Cancer AJCC v9

**Semantic type:** Neoplastic Process

**Definition:** Stage IB includes: T1b, N0, M0. T1b: Tumor measuring more than 2 cm in greatest dimension or with stromal invasion more than 1 mm. 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 IB Vulvar Carcinoma AJCC v9