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Case 95944

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Referral category

Temporomandibular joints (TMJ)

Region of interest

right side TMJ

Referral reason

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Canaray 95944

1. degenerative disease in right TMJ

The joint space is reduced in the right temporomandibular joint. An osteophyte, subchondral cysts, and sclerosis have formed on the condylar head, which suggests that degenerative joint disease is present in the right temporomandibular joint.

2. Benign lesion on right condylar head

A well-defined radiolucent cystic lesion is present at the posterior-lateral aspect of the right condylar head extending from the posterior-superior surface of the condyle to the neck of the condyle along the posterior-lateral surface. The cystic lesion slightly expands and thins the lateral border of the condylar neck. A dehiscence is present in the lateral aspect of the condylar neck. These features is suggestive of a benign lesion that is developing in the right condylar head, such as central giant cell granuloma. Further investigation by MRI or medical CT is recommended.

Sagittal views of the right TMJ

These cross-sectional sagittal views demonstrate the degenerative changes on the right condylar head as well as decreased joint space. Note the dehiscence in the lateral aspect of the condylar neck.

Coronal views of right TMJ

These coronal cross-sectional images demonstrate the presence of subchondral cysts and osteophyte within the right condylar head as well as severely decreased joint space which suggests that degenerative joint disease may be present. Note also the lesion on the posterior-lateral aspect of the head and neck of the right condyle.

Axial views of the right TMJ

These orthogonal axial views of the right temporomandibular joint demonstrate mild expansion and dehiscence of the posterior-lateral cortex of the right condylar head and neck associated with the lesion at this site.

Orthogonal views of the right TMJ

These orthogonal cross-sectional views demonstrate the dimensional measurements of the lesion in anterior-posterior, medial-lateral and superior-inferior dimension.