PMC6033245_01
(a) Lateral-view T2 sequence MRI of the left knee showing a multiloculated structure arising from the synovium around the cruciate ligaments within the femoral notch. (b) The lesion is extending beyond the joint capsule posteriorly displacing the popliteal vessels.
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fig1
(a) Lateral-view T2 sequence MRI of the left knee 6-month post arthroscopic resection of posterior-compartment PVNS, showing no more compressive effect on both the cruciate ligaments and the popliteal vessels. (b) There is a significant decrease in the soft tissue enhancement suggestive of decreased inflammation in the region of the resected lesion. There is no evidence of interval appearance of new susceptibility artifacts or blooming effect suggesting recurrence.
CRIOR2018-7532358.002.jpg
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fig2
On 6-month MRI follow-up, the previously described soft tissue enhancement suggestive of residual inflammatory changes noted within the femoral notch along the cruciate ligaments as well as posterior to the distal metaphysis at the site of the previously present lesion has decreased (Figures 2(a) and 2(b)).