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Harris ring

Case contributed by Himanshu Mishra
Diagnosis not applicable

Patient Data

Gender: Unknown
x-ray

Lateral radiograph of the cervical spine demonstrating an intact Harris ring at the base of the odontoid of the C2 vertebra.

Annotated image

Annotated image showing the Harris ring (encircled).

Case Discussion

Harris ring is a normal radiological shadow observed at the base of the odontoid process on lateral radiographs of the cervical spine. It is formed by the superimposition of lateral masses of the C2 vertebra (axis) on its body.

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