Magnetic resonance imaging study of incidental findings in the paranasal sinuses and ostiomeatal complex
Yousefi Faezeh, Mollabashi Mina, Shokri Abbas, Tavakoli Emad, Farhadian Maryam, Tavakoli Ali,
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( Yousefi Faezeh ) - Hamadan University of Medical Sciences School of Dentistry Department of Oral and Maxillofacial Radiology
( Mollabashi Mina ) - Hamadan University of Medical Sciences School of Medicine Department of Radiology
( Shokri Abbas ) - Hamadan University of Medical Sciences School of Dentistry Department of Oral and Maxillofacial Radiology
( Tavakoli Emad ) - Hamadan University of Medical Sciences School of Dentistry Department of Oral and Maxillofacial Radiology
( Farhadian Maryam ) - Hamadan University of Medical Sciences School of Public Health Department of Biostatistics
( Tavakoli Ali ) - Hamadan University of Medical Sciences School of Medicine Department of Radiology
Abstract
Purpose: This study aimed to assess incidental abnormal findings in the paranasal sinuses and anatomical variations of the ostiomeatal complex (OMC) on magnetic resonance imaging (MRI) scans.
Materials and Methods: MRI scans of 616 patients (mean age, 44.0±19.4 years) were evaluated. Prior to obtaining the MRI scans, a checklist of patients’ clinical symptoms was filled out after obtaining their consent. The Lund-Mackay classification was used to assess the paranasal sinuses and OMC. The prevalence of abnormal findings and their associations with patients’ age, sex, and subjective symptoms were analyzed by the chi-square test, independent-sample t-test, and analysis of variance. The level of significance was set at 0.05.
Results: Abnormal findings in the paranasal sinuses were detected in 32.0% of patients, with a significantly higher prevalence in males (P<0.05), but no significant association with age (P>0.05). Epithelial thickening and retention cyst were the most common abnormal findings in the paranasal sinuses. According to the Lund-Mackay classification, 93% of the study population had normal sinuses (score<4). Concha bullosa and paradoxical concha were detected in 15.3% and 3.4%, respectively, with no significant association with the presence of septal deviation or Lund-Mackay classification (P>0.05).
Conclusion: Considering the relatively high prevalence of abnormal findings in the paranasal sinuses, it appears that clinical symptoms alone are not sufficient to diagnose sinusitis. A more accurate strategy would be to assess radiographic images of the paranasal sinuses and use a classification system. Sinusitis should be suspected in patients receiving a high score in this classification.
키워드
Magnetic Resonance Imaging; Paranasal Sinuses; Incidental Findings; Nasal Septum
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