Mays AC, et al. - Experts evaluated the optimal treatment and prognostic factors affecting long-term survival in patients with sinonasal adenoid cystic carcinoma (ACC). A better long-term survival was seen in this large cohort of patients with sinonasal ACC with extended follow-up than reported in prior literature. Recurrent disease, any solid type histology, epicenter in the sinus cavity, the presence of facial symptoms, or the original disease not treated with surgery were the factors that portended for poor survival on multivariate analysis. Surgical margin status or nodal status and survival were not seen to be associated.