Ethmoid mucocele

Last revised by David Luong on 27 Jul 2021

An ethmoid mucocele is a form of paranasal sinus mucocele involving the ethmoid air cells. Depending on its anterior and/or posterior location, they can also include nasoethmoid and sphenoethmoid mucoceles. Ethmoid mucoceles are considered the second most commonest in location 2.

Patients are commonly asymptomatic although can occasionally present with ocular symptoms and signs such as visual impairment 3, diplopia 5 or proptosis.

Can be seen as a homogeneously attenuating expansile lesion involving one of the ethmoid air cells. Does not enhance with contrast and does not demonstrate destructive features (i.e outer bony margins smooth).

Signal characteristics are similar to that of other paranasal sinus mucoceles.

Possible differential considerations include

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Cases and figures

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