X-ray
Frontal
Systems: Musculoskeletal
Section: Signs
Tag: spine
Modality: X-ray (Frontal)

- “ The inverted Napoleon hat sign indicates the presence of bilateral spondylolysis and significant spondylolisthesis. The dome of the hat is formed ...”

Used in the following article:

  • Inverted Napoleon hat sign - “ The inverted Napoleon hat sign is a radiologic sign seen on the frontal pelvic or lumbar radiograph at the level of the 5th lumbar vertebra and th...”

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