Odontogenic Sinusitis

History: 50 year old man with headache. This is a case of odontogenic sinusitis, which is inflammation in a sinus adjacent to odontogenic infeciton or sinusitis as a result of sinus entry during dental surgery. The differential diagnosis includes sinus disease of other origins such as fungal sinusitis or bacterial superinfection after a viral URI,…

radiologypics

February 11, 2013

1–2 minutes

headache, mouth, Nose and Paranasal Sinuses, Sinusitis

History: 50 year old man with headache.

Coronal CT image of the face reveals a periapical lucency near one of the right maxillary molars (yellow arrow). Note the mucosal thickening in the right maxillary sinus as a result of the adjacent inflammation. — **Odontogenic sinusitis:** Coronal CT image of the face reveals a periapical lucency near one of the right maxillary molars (yellow arrow). Note the mucosal thickening in the right maxillary sinus (green arrow) as a result of the adjacent inflammation.

This is a case of odontogenic sinusitis, which is inflammation in a sinus adjacent to odontogenic infeciton or sinusitis as a result of sinus entry during dental surgery. The differential diagnosis includes sinus disease of other origins such as fungal sinusitis or bacterial superinfection after a viral URI, or mutliple mucous retention cysts.

Odontogenic sinusitis is diagnosed on CT when there is mucosal thickening in a sinus adjacent to an inflamed tooth, whether there is a dental carie, or in this case, a periapical lucency suggestive of a periapical abscess. It is treated with tooth extraction and antibiotics.

2 responses to “Odontogenic Sinusitis”

Periapical Tooth Abscess – The spectrum of apical periodontitis « RadiologyPics.com

February 11, 2013 at 8:21 pm

[…] This is an example of a tooth abscess, or periapical abscess. The lucency in the maxilla indicated by the yellow arrow is somewhat nonspecific and may be secondary to tooth loosening, however, the adjacent maxillary sinus mucosal thickening argues for the case of an abscess. Click the following link to learn about Odontogenic Sinusitis. […]

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Submandibular Space Abscess « RadiologyPics.com

February 14, 2013 at 10:36 am

[…] Tooth abscesses can also cause sinusitis. […]

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