Pneumatised petrous temporal bone apex
Headache. CT to exclude contraindications to lumbar puncture.
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Images uploaded to demonstrate pneumatised petrous temporal bone apices as an anatomical variant.
Pneumatisation of the petrous temporal bone apices is an anatomical variant that may be symmetrical bilaterally or asymmetrical. It is important to recognise asymmetrical pneumatisation as normal anatomical variation and not confuse it with a tumour or pathological lesion.1,2 Benign lesions such as cholesterol granuloma and cholesteatoma are more likely to occur in a pneumatised petrous apex.1,2
- 1. Ahmed Abdel Razek, MD, and Benjamin Y. Huang, MD, MPH, Lesions of the Petrous Apex: Classification and Findings at CT and MR Imaging, Radiographics January-February 2012, Volume 32, Issue 1 http://dx.doi.org/10.1148/rg.321105758
- 2. Connor SE, Leung R, Natas S. Imaging of the petrous apex: a pictorial review. Br J Radiol 2008;81(965):427–435.