Patient Data
Gender: Male
From the case:
Winking owl sign - absent pedicle in spinal metastases
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Absent right pedicle of L4.
From the case:
Winking owl sign - absent pedicle in spinal metastases
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Winking owl.
Image source: Wikimedia commons.
Case Discussion
Winking owl sign refers to an absent vertebral pedicle in a frontal radiograph.