label: Stage IB Vulvar Cancer AJCC v9
label_lc: stage ib vulvar cancer ajcc v9
description: 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.)