Presentation
Pain with locking of the left knee.
Patient Data
Age: 8 years
Gender: Female
From the case:
Discoid lateral meniscus - parameniscal cyst
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The MRI sequences demonstrate;
- an abnormal width of the lateral meniscus (27 mm) on coronal sequences, which is visible on more than three images on sagittal sequences with an abnormal thickened bow tie appearance
- anterior parameniscal cyst is noted, protruding into Hoffa's fat pad well-visualized on sagittal and axial PD fat sat with an abnormal intrinsic high signal (degeneration) with a horizontal tear of the anterior horn
- small knee joint effusion
- normal appearance of the medial meniscus, cruciate and collateral ligaments
Case Discussion
MRI features of a discoid lateral meniscus with degeneration and parameniscal cyst arising from a horizontal meniscal tear of the anterior horn.
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