Vertebral metastases: absent pedicle

Case contributed by A.Prof Frank Gaillard


Mid thoracic back pain.

Absent left pedicle of T11 vertebra.

Lytic lesion at left pedicle of T11 vertebra.

Case Discussion

X-rays of the thoracic spine demonstrate the left  T11 pedicle to be absent, seen only on AP projection and is called the winking owl sign. This is confirmed on CT, with evidence of other lytic spinal metastases

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Case information

rID: 7203
Published: 16th Sep 2009
Last edited: 9th Jun 2017
Inclusion in quiz mode: Included

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