label: Stage I Sinonasal Squamous Cell Carcinoma AJCC v6 and v7
label_lc: stage i sinonasal squamous cell carcinoma ajcc v6 and v7
description: Stage I includes: T1, N0, M0.  T1: Maxillary sinus: Tumor limited to the maxillary sinus mucosa with no erosion or destruction of bone.  Nasal cavity and ethmoid sinus: Tumor restricted to any one subsite, with or without bony invasion.  N0: No regional lymph node metastasis.  M0: No distant metastasis. (AJCC 6th and 7th eds.)