Protrusion of the infraorbital canal into the maxillary sinus

Last revised by Yuranga Weerakkody on 23 Apr 2023

Citation, DOI, disclosures and article data

Citation:

Weerakkody Y, El-Feky M, Murphy A, Protrusion of the infraorbital canal into the maxillary sinus. Reference article, Radiopaedia.org (Accessed on 01 Dec 2023) https://doi.org/10.53347/rID-152452

DOI:

https://doi.org/10.53347/rID-152452

Permalink:

https://radiopaedia.org/articles/152452

rID:

152452

Article created:

11 Sep 2022, Yuranga Weerakkody ◉

Disclosures:

At the time the article was created Yuranga Weerakkody had no financial relationships to ineligible companies to disclose.

View Yuranga Weerakkody's current disclosures

Last revised:

23 Apr 2023, Yuranga Weerakkody ◉

Disclosures:

At the time the article was last revised Yuranga Weerakkody had no financial relationships to ineligible companies to disclose.

View Yuranga Weerakkody's current disclosures

Revisions:

5 times, by 3 contributors - see full revision history and disclosures

Systems:

Head & Neck

Tags:

cases

Synonyms:

Ectopic infraorbital nerve canal
Infraorbital canal protrusion into maxillary sinus
Protrusion of the infraorbital canal nerve into the maxillary sinus
Intra-sinus course of infraorbital canal

Protrusion of the infraorbital canal into the maxillary sinus is a type of variant anatomy where the infraorbital canal traverses below the level of the orbital floor and often through the maxillary sinus to varying degrees. It can be detected on sinus CT and cone beam computed tomography and it is beneficial to be reported by a radiologist in raising caution to avoid potential injury to the infraorbital nerve during a surgical procedure. A bony septum usually attaches the infraorbital canal to a maxillary sinus wall.