Another possible cause of Sleep Apnea..(especially Centrals)

Has anyone ever had their doctor rule out Arnold Chiari Malformation as the reason for their OSA ?

Symptoms of the malformation include:
Patients with the Chiari Malformation present with one or more signs and symptoms of brainstem, cranial nerve, cerebellar or spinal cord dysfunction including:

Headache (especially cough headache)
Neck pain
Disordered eye movements
Trigeminal dysesthesia
Sensorineural hearing loss
Tinnitus
Dizziness
Dysphagia
Sleep apnea
Nystagmus
Dysarthria
Ataxia
Dysethesias/numbness
Sensory loss
Weakness, greater in the upper than lower extremities

See:
http://www.usresolve.org/chiari-malformation.php and http://www.chiariinstitute.com/chiari_about.html

Just curious...

Regards