label: Stage IB Ampulla of Vater Cancer AJCC v7
label_lc: stage ib ampulla of vater cancer ajcc v7
description: Stage IB includes: T2, N0, M0. T2: Tumor invades the duodenal wall.  N0: No regional lymph node metastasis.  M0: No distant metastasis. (from AJCC 7th Ed.)