Nasal glioma (nasal brain heterotopia)

Case contributed by Dr Salman S. Albakheet


Congenital nasal lesion. MRI requested to role out intra-cranial continuation.

Patient Data

Age: Child
Gender: Female

MRI Face

Left sided extranasal lesion with signal intensity similar to that of the intra-cranial brain is noted with no evidence of intra-cranial continuation.

Case Discussion

A nasal glioma usually has no connection to the intracranial brain. These lesions unlike intracranial gliomas, contain non-neoplastic glial tissue. For this reason, the term nasal glioma is not accurate; nasal brain heterotopia or nasally trapped brain might be a better term.

Nasal gliomas are generally disconnected from the brain and grow very little or none at all.

Occasionally (1%–15%), they remain connected to the brain via a thin stalk, and their growth may reflect that of intracranial structures.

Nasal gliomas have intermediate signal intensity on T1-weighted images, may show some contrast enhancement, and have high signal intensity on T2-weighted images as a result of gliosis.

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Case information

rID: 33169
Published: 2nd Jan 2015
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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