Sinonasal Tumor-Like Lesions

Sinonasal tumor-like lesions represent a heterogeneous group of non-neoplastic growths that may clinically and/or histologically mimic a tumor, thus requiring careful differential diagnosis to avoid overtreatment. Some of these lesions are common, like inflammatory polyps, while others are very rare. They occur over a wide age range, involving pediatric patients as well as adults.