13-year-old boy with jaw pain and swelling

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Doctor's Information

Name : Morteza
Family :Sanei Taheri
Affiliation : Radiology Department,Shohada Tajrish Hospital,SBMU
Academic Degree: Associate Professor of Radiology
Email : This email address is being protected from spambots. You need JavaScript enabled to view it.
Resident : Hussein Soleiman Tabar

Patient's Information

Gender : Male
Age : 13

Case Section

Head & Neck Imaging

Clinical Summary

13-year-old boy with jaw pain and swelling

Imaging Procedures and Findings

There is an expansile lytic lesion in left mandible, containing an ectopic tooth.

Discussion

Dentigerous cyst, formed by degeneration of the enamel organ of a tooth prior to its eruption, is located in the expected position of the tooth's crown. Dentigerous cyst is the most common cyst in the mandible. It has a well defined sclerotic margin and contains an ectopic tooth. There is an association with the Gorlin (basal cell nevus) syndrome. The cyst may enlarge during childhood resulting in radiographic lucency and thinning of the overlying cortex of the mandible or maxilla. Presentation may be with swelling, pain or secondary infection of cyst contents.