Discoid meniscus with tear

Case contributed by Vinay Shah
Diagnosis certain

Presentation

pain in right knee joint.

Patient Data

Age: 10 years
Gender: Female
mri

There is increased width of body of lateral meniscus, which is seen on more than 3 contigenous saggital images, represent near complete discoid meniscus. Linear intrasubstance hyperintense signal is seen in lateral meniscus on gradient and PD fat sat images, which reaches upto its anterior margin – represents its horizontal tear. 

Small fairly well defined lobulated hyperintense area is seen adjacent to the anterior horn of lateral meniscus on T2W and PD fat sat images – probably represent parameniscal cyst rather than part of joint effusion. There is minimal synovial joint effusion.

Case Discussion

These findings represent discoid meniscus with tear.

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