Non-traumatic pneumocephalus caused by increased depth of olfactory fossa

E Boninsegna; M Barillari; S De Rossi; D Marchioni; G Mansueto

doi:10.1016/j.bjoms.2019.01.025

Non-traumatic pneumocephalus caused by increased depth of olfactory fossa

Br J Oral Maxillofac Surg. 2019 Jul;57(6):587-589. doi: 10.1016/j.bjoms.2019.01.025. Epub 2019 May 10.

Authors

E Boninsegna¹, M Barillari², S De Rossi³, D Marchioni³, G Mansueto²

Affiliations

¹ Department of Radiology, Università degli Studi di Verona, Verona, Italy. Electronic address: boninsegnae@gmail.com.
² Department of Radiology, Università degli Studi di Verona, Verona, Italy.
³ Department of Otolaryngology - Head & Neck Surgery, Università degli Studi di Verona, Verona, Italy.

PMID: 31085015
DOI: 10.1016/j.bjoms.2019.01.025

Abstract

We report a case of unilateral Keros type III variant of the cribriform plate (olfactory fossa >7 mm deep) that caused non-traumatic pneumocephalus. A 61-year-old male patient presented to the emergency room complaining of acute-onset headache after blowing his nose. Computed tomographic (CT) examination showed a massive pneumocephalus; a CT scan from three months before showed a Keros type III variant. The defect was repaired endoscopically with mucoperichondrial and mucoperiostal grafts. Pneumocephalus that has developed in a Keros type III variant has been theorised about, but never reported to our knowledge. Radiologists should be familiar with the Keros classification so that they can identify patients who are at increased risk of fractures of the cribriform plate.

Keywords: CT; Functional Endoscopic Sinus Surgery; anatomical variant; pneumocephalus.

Publication types

Case Reports

MeSH terms

Ethmoid Bone* / injuries
Fractures, Bone* / complications
Fractures, Bone* / etiology
Humans
Male
Middle Aged
Nose
Pneumocephalus* / etiology
Tomography, X-Ray Computed