There is also a condition called midline granuloma. Although not classified as cancer, in some cases this is thought to represent a rare kind of lymphoma. Midline granulomas are treated with radiotherapy .

Five-Year Survival  60 to 70 percent 

Stage II 
Standard Treatment 
• Maxillary sinus: Surgery and high-dose radiotherapy (pre- or postoperative).
• Ethmoid sinus: Radiotherapy is generally preferred. Localized lesions can be removed surgically (radical
  surgery), but radiotherapy is needed afterwards.
• Sphenoid sinus: Same as nasopharyngeal tumors, using radiotherapy.
• Nasal cavity: Surgery or radiotherapy for tumors of the septum, radiotherapy elsewhere.
• Inverting papilloma: Same as Stage I. Radiotherapy may be needed if further surgery is unsuccessful.
• Melanomas and sarcomas: Surgery if possible.
• Midline granuloma: Radiotherapy. 
• Nasal vestibule (front part of nasal cavity): Surgery if no deformity is expected or there is no need for
  reconstruction. Otherwise, radiotherapy.