Unossified/developing anterior skull base

Case contributed by Dr Dalia Ibrahim

Presentation

Nasal discharge and obstruction.

Patient Data

Age: Newborn
Gender: Male
Modality: MRI

Unossified crista galli. (Normal for age)

Small opacified both maxillary antra and ethmoidal complexes. (Well appreciated at CT images (not shown).

Non pneumatized frontal and sphenoid sinuses.

Modality: CT

Note the non ossified anterior cranial skull base. (see crista galli)

 

Modality: Annotated image

Note the non ossified anterior cranial skull base.

Case Discussion

At birth, the anterior skull base is largely cartilaginous.

Ossification of crista galli & perpendicular plate of the ethmoid bone begins around 2 months of age.

By 6 months of age, 50% of the anterior skull base has completely ossified.

By 24 months, the majority of the cartilage of the anterior skull base is ossified.

It's important to understand the developing anterior skull base not to misinterpret it as pathology. 

PlayAdd to Share

Case Information

rID: 31351
Case created: 2nd Oct 2014
Last edited: 13th Mar 2016
System: Head & Neck
Inclusion in quiz mode: Included

Updating… Please wait.
Loadinganimation

Alert accept

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

Alert accept Thank you for updating your details.