Malignant and Nonmalignant Sinonasal Tumors

Oral Maxillofac Surg Clin North Am. 2023 Aug;35(3):377-398. doi: 10.1016/j.coms.2023.03.002. Epub 2023 May 5.


Sinonasal tumors are rare, diverse, complex lesions with overlapping demographic and clinical features. Malignant tumors are more common, with a grave prognosis, and require biopsy for accurate diagnosis. This article briefly reviews the classification of sinonasal tumors and provides imaging examples and imaging characteristics of each clinically important nasal and paranasal mass lesions. Although there are no true pathognomonic imaging features, it is important for the radiologist to have a broad knowledge of the various CT and MR imaging findings that can help narrow the differential diagnosis and aid in early diagnosis and mapping of tumor for treatment planning.

Keywords: CT; Classification; MRI; Sinonasal; Staging; Tumors.

Publication types

  • Review

MeSH terms

  • Diagnosis, Differential
  • Humans
  • Magnetic Resonance Imaging / methods
  • Paranasal Sinus Neoplasms* / diagnostic imaging
  • Paranasal Sinus Neoplasms* / pathology