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Arrested Pneumatization of the Sphenoid Sinus
Hyung Joon Cho1, Myong Hun Hahm2, Jung Soo Kim1
1Department of Otorhinolaryngology-Head and Neck Surgery.
The Journal of Craniofacial Surgery
|February 2, 2023
Summary
Arrested pneumatization of the sphenoid sinus is a common condition that can be mistaken for skull base disease on imaging. Accurate interpretation of CT and MRI scans is crucial for correct diagnosis.
Area of Science:
- Radiology
- Anatomy
- Embryology
Background:
- The sphenoid bone's embryological development is complex.
- Sphenoid sinus pneumatization begins after birth and can be arrested.
- Arrested pneumatization is a normal variant but often misdiagnosed.
Observation:
- Two cases are presented: a 29-year-old man with dizziness and a 60-year-old woman with headache.
- Imaging (CT and MRI) revealed lesions in the sphenoid bone.
- Findings included non-homogenous, non-eroding lesions and fibro-osseous changes.
Findings:
- CT and MRI findings can mimic serious skull base pathology.
- Arrested pneumatization presents as a non-homogenous lesion on CT.
- MRI shows characteristic high signal intensity on T1 and T2 weighted images.
Implications:
- Accurate diagnosis of arrested sphenoid sinus pneumatization is essential.
- Distinguishing this variant from disease avoids unnecessary invasive procedures.
- Precise interpretation of imaging aids in differential diagnosis of skull base lesions.
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