Winking owl sign
One of the first signs of vertebral metastases is disappearance of the pedicle on the AP X-ray. This is known as the 'absent pedicle' or 'winking owl sign'.
One of the first signs of vertebral metastases is disappearance of the pedicle on the AP X-ray. This is known as the 'absent pedicle' or 'winking owl sign'.