Is Routine Neuroimaging Needed in Adult-Onset Isolated Cervical Dystonia?

Area of Science:

• Neurology
• Radiology
• Movement Disorders

Background:

• Clinical practices for neuroimaging in cervical dystonia lack standardization globally.
• Published research on the necessity of routine neuroimaging for isolated cervical dystonia is limited.

Purpose of the Study:

• To determine if structural neuroimaging is essential for patients diagnosed with isolated cervical dystonia.
• To evaluate the diagnostic yield of brain imaging in identifying secondary causes of dystonia.

Main Methods:

• Retrospective review of clinical and neuroimaging data (MRI/CT) for adult-onset cervical dystonia patients (1996-2022).
• Identification of patients with presumed idiopathic or uncertain etiology prior to imaging.
• Analysis to detect structural brain abnormalities and assess their potential causality.

Main Results:

• Out of 365 patients, 282 underwent neuroimaging; only 9 (2.5%) had acquired brain lesions.
• Lesions were significantly more common in patients with additional neurological features (P < 0.001).
• All lesions in isolated cervical dystonia patients (n=3) were deemed incidental; none showed progressive neurodegeneration.

Conclusions:

• Routine structural neuroimaging is not indicated for adult-onset isolated cervical dystonia.
• The presence of other neurological features, not isolated dystonia, correlates with detectable brain lesions.