May Cause

Absent vertebral pedicle

Hypoplastic vertebral pedicle

May Be Caused by

 Common

Infectious disease

Intraspinal cyst

Intraspinal neoplasm

Meningioma

Metastasis

Neurofibroma

Tuberculosis

 Uncommon

Aneurysmal bone cyst

Arteriovenous malformation

Giant cell tumor

Hemangiopericytoma

Hydatid disease

Hydromyelia

Langerhans cell histiocytosis

Lymphoma

Multiple myeloma

Syringomyelia

Vertebral artery aneurysm

Vertebral artery tortuosity