Patients
The study was reviewed and approved by the local Institutional Review Board (IRB). We conducted a retrospective review of the medical database of our tertiary medical center for all patients treated for NPC between 2000-2018.
Inclusion criteria were adult patients (age>18 years) who had at least one year of follow up. Patients with primary sinonasal malignancies were excluded.
Data retrieved included patient demographics as well as treatment modalities, imaging, tumor pathology and follow up data.