Presentation
Large radiolucent lesion left maxilla on plain film
Patient Data
Age: 35 years
Gender: Female
From the case:
Odontogenic keratocyst
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A large, unilocular cyst, with well-demarcated margins, is seen involving the left maxilla and extending superiorly into the left maxillary sinus. This lesion is related to the roots of the UL5-6 teeth. There is thinning of the walls of the cyst with focal dehiscence involving its anterior inferior aspect. The lesion measures 3.2 x 2.7 x 2 cm in its maximum dimensions. No soft tissue components noted.
Case Discussion
Left maxilla unilocular cystic lesion as above described, likely representing odontogenic keratocyst (OKC).
Differential diagnoses include:
-
Radicular (Periapical cyst)
- round or pear-shaped unilocular cyst
- epicenter at the tooth apex.
-
Dentigerous cyst
- unilocular cyst around the crown of an impacted tooth.
-
Ameloblastoma
- multilocular cyst with multiple internal septa
- more prominent tooth displacement and root resorption
- soft tissue mural nodule
- post-contrast enhancement of the septa and mural nodule
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