Items tagged “spine”

The (absent) pedicle sign, also called the winking owl sign, occurs on plain radiograph of the spine when a pedicle is absent 5. The term, winking owl sign, where the missing pedicle corresponds to the closed eye, the contralateral pedicle to the other round open eye, and the spinous process to...

Fibrocartilaginous embolism (also known as nucleus pulposus embolism) is a rare cause of spinal cord ischemia due to embolization of nucleus pulposus material from intervertebral disc in a retrograde direction into a spinal artery or vein. Fibrocartilaginous embolism is a diagnosis of suspicion...

Diplomyelia is a rare spinal cord malformation in which the cord is duplicated. It should be distinguished from diastematomyelia in which a single cord is split. Having said that it has been proposed that the term be abandoned in favor of split cord malformation, which encompasses both diastemat...

The differential diagnosis for a vertebral body mass is broad and may range from a completely benign bone island to a malignant primary bone tumor. Classification Broadly, these lesions can be separated into: non-neoplastic lesions primary bone tumors secondary metastatic disease Non-neopl...