Kim SA, et al. - Researchers conducted this retrospective chart review to investigate the post–5-year recurrence patterns in patients with sinonasal cancer (n = 241) by histologic type to determine the indicators for extended and close follow-up requirements. Adenoid cystic carcinoma, followed by melanoma, poorly differentiated carcinoma, squamous cell carcinoma, and olfactory neuroblastoma were the most common post–5-year recurrences. In adenoid cystic carcinoma, followed by melanoma, poorly differentiated carcinoma, and squamous cell carcinoma, post–5-year local recurrence was highest. Post–5-year regional recurrence happened in one squamous carcinoma patient, and distant metastasis was observed in one adenoid cystic carcinoma patient. After a 5-year disease-free period, sinonasal cancer exhibits an 11.7% recurrence rate. Since this pattern of recurrence differs with tumor pathology, a comprehensive follow-up plan is necessary for each type of cancer.