The atlas demonstrates an anterior arch cleft and a large osseous defect involving its left posterior hemiarch and posterior tubercle.
There is fusion of the vertebral bodies and most o the posterior elements of C4, C5, C6, C7 and T1 vertebrae. The fused vertebral bodies appear hypo plastic with reduced anteroposterior diameter and an anterior concavity giving a wasp-waist appearance. The C5 vertebral body has a butterfly configuration. The intervertebral discs at these levels are rudimentary. These findings are compatible with Klippel-Feil syndrome.
Spina bifida is noted at the C4, C5, C6 and C7 vertebrae.
Cervicothoracic scoliosis is demonstrated.
There is a cervical rib projecting from the left C7 transverse process.
The left scapula is higher than usual. There is a bony structure (omovertebral bone) running along the left side of the spinous processes of C7 to T3 and terminating at the medial border of the left scapula, probably with fibrous fusion or attachment. These findings are reflective of Sprengel deformity.