It can manifested as sudden death due to fatal brainstem compression, but more often it is asymptomatic.
[dizziness-and-balance.com]
Although asymptomatic patients are often followed conservatively, many authors favor surgery even if no symptoms of cord compression are evident in rheumatoid patients.
[neuroradiologyonthenet.blogspot.com]
Patients may be asymptomatic or complain of headaches, neck pain, cough, trigeminal neuralgia, limb weakness, altered muscle reflexes, quadriparesis, nystagmus, and ataxia
[rrnursingschool.biz]