What does rule out HNP mean when they request it on a cervical mri?

The term "rule out HNP" in the context of a cervical MRI request means that the radiologist wants to determine whether there is a herniated nucleus pulposus (HNP) present in the cervical spine. A HNP, also known as a slipped disc, involves the displacement of the soft, central portion of an intervertebral disc through a tear in the surrounding fibrous ring.

Requesting the MRI to "rule out HNP" indicates that the healthcare provider suspects a herniated disc as a possible cause of the patient's symptoms, such as neck pain, arm pain, or neurological deficits. By obtaining detailed images of the cervical spine, the MRI can help visualize the intervertebral discs and surrounding structures to confirm or exclude the presence of a HNP and assess its characteristics, such as the location, size, and direction of the herniation.

The precise wording of the MRI request, including additional or specific instructions, may vary depending on the clinical situation and the requesting physician's preferences.