"group a: limited to the nasal cavity"
"group b: limited to the nasal cavity and paranasal sinuses"
"group c: extends beyond the nasal cavity and paranasal sinuses:"
"group d: cervical nodal metastases"
"group a: limited to the nasal cavity"
"group b: limited to the nasal cavity and paranasal sinuses"
"group c: extends beyond the nasal cavity and paranasal sinuses:"
"group d: cervical nodal metastases"