The frontal wishbone: Anatomic and clinical implications
Methods: The dimensions, drainage pathways, and disease state of the FWB were measured in 150 consecutive sinus CT scans performed at a tertiary care referral center. Statistical analysis was performed to correlate the FWB configuration to the presence of frontal sinus disease.
Results: A FWB was present in 77.3% of patients. The wishbone drained through a discrete ostium into either the left (54.8%), the right (45.2%), or the bilateral (0.8%) frontal sinuses. In those scans with mucosal thickening or opacification of the frontal sinus (36%), concurrent FWB disease was found in 82%. Patients with a large (>1 cm) FWB in the anterior–posterior dimension were more likely to have a diseased frontal sinus (p = 0.02).
Conclusion: The term FWB is used to describe an air cell within the interfrontal septum, which may play a role in the pathogenesis of frontal sinus disease.
Document Type: Research Article
Affiliations: 1: Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts 2: Department of Otolaryngology, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts; Department of Otology and Laryngology, Harvard Medical School, Boston, Massachusetts
Publication date: 2007-11-01