Hyperpneumatisation of mastoid air cells

Case contributed by Townsville radiology training


Hx of benign intracranial HTN, obese. Presented with 2/12 swelling R. occipital region, 2/52 tenderness. No new headaches/trauma/discharge. No fever. No ALOC. Hx of repititive valsalva manouvre as a habit.

Patient Data

Age: 16
Gender: Female

Excessive pneumatisation of the mastoid air cells extending along occipital bone including condyle, clivus, petrous apex on R. Loculated air collection in scalp overlapping parietal, occipital with internal septae.

Also into mandibular fossa, prevertebral, parotid space.

Air pockets extending to extradural space at the craniovertebral junction, anterior to occipital condyle and through hypoglossal canal. Loculated septated collection in extradural space in parieto-occipital region causing mass effect on brain parenchyma.

Partial empty sella syndrome (type 1) and CSF along optic nerve sheaths in keeping with benign intracranial HTN.

No pneumocephaly 

PlayAdd to Share

Case information

rID: 19350
Case created: 31st Aug 2012
Last edited: 22nd Mar 2016
Inclusion in quiz mode: Included

Updating… Please wait.

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.