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Figure 1: Preoperative magnetic resonance imaging (MRI) of the craniovertebral junction (CVJ) showed left-sided foramen magnum stenosis (a). There is tonsillar herniation up to the posterior arch of C1. (b-d) Computed tomography (CT) of CVJ with reconstruction images showed medialised left occipital condyle compromising the foramen magnum ventrally |
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