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case_images: Slight swelling of the anteromedial side of the left ankle.
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case_images: A small, non-inflammatory swelling was observed on the anteromedial side of the ankle (Fig. 1).
case_images: Lateral and 3/4 X-ray of the left ankle.
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case_images: X-rays of the ankle, both frontal and lateral views, revealed a well-defined lytic lesion at the neck of the talus without periosteal reaction (Fig. 2).
case_images: Computed Tomography of the left ankle.
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case_images: A CT scan confirmed bone lysis involving more than half of the talus (Fig. 3).
case_images: MRI of the left ankle. (A) Sagittal T1 MRI with contrast and fat suppression showing enhancement of the lesion with cortical.
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case_images: T1 hyposignal, and was composed of multiple compartments containing fluid levels. The septa were enhanced after contrast injection. This appearance suggested either a giant aneurysmal bone cyst or a giant cell tumor of the talus (Fig. 4).
case_images: Post-operative X-ray of the left ankle; (A) at 3 months; (B) at 6 months.
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case_images: The patient was followed up at 3 weeks, 1 month, and 3 months with standard X-rays (Fig. 5).
case_images: Frontal and lateral X-ray of the ankle 6 months after surgery.
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case_images: Walking was possible with plantigrade support, though with a limp (Fig. 6).