PMC4891621_01
Ruptured peroneal ganglion cyst. T2 fat-saturated axial MRI shows a multiloculated cyst within the extensor digitorum longus muscle. [Powerpoint Slide]
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MRI demonstrated a multiloculated fluid-filled cystic mass within the proximal extensor digitorum longus muscle that appeared to be arising from the tibiofibular joint and extending inferiorly and anterolaterally (Figure 1A, Figure 1B, Figure 1C).
Ruptured peroneal ganglion cyst. Post-gadolinium T1 fat-saturated axial MRI shows enhancement of the cyst walls but not of the cyst contents or the surrounding tissues. [Powerpoint Slide]
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T2-bright signal tracking inferiorly did not enhance, nor did the cyst contents (Fig. 2). These findings were consistent with ruptured peroneal ganglion cyst with fluid tracking down the anterior leg compartment.