label: Stage I Skin Cancer
label_lc: stage i skin cancer
description: "Stage I includes: T1, N0, M0.  T1: Tumor 2 cm or less in greatest dimension with less than two high-risk features.  High-risk features for the primary tumor staging are defined as follows: depth/invasion of more than 2 mm thickness, Clark level equal or greater than IV, and perineural invasion.  Anatomic location: primary site ear and primary site non-hair-bearing lip.  Differentiation: poorly differentiated or undifferentiated.  N0: No regional lymph node metastasis.  M0: No clinical or radiographic evidence of distant metastasis.  (AJCC 7th ed.)"