53. 有關Rheumatoid Arthritis 病人，下列何者為非？
(A) Anterior subluxation of C1 on C2 (atlantoaxial subluxation) may occur in 40% of patients with RA, with symptoms ofprogressive neck pain and headaches.
(B) Risk also increases for cricoarytenoid dislocation with traumatic endotracheal intubations.
(C) Rheumatoid Arthritis patients are rarely affected with acute pericarditis.
(D) Flexion of the head in the presence of atlantoaxial instability could result in the displacement of the odontoid processinto the cervical spine and medulla and compression of the vertebral arteries.
(E) Overlapping connective tissue syndromes such as Sjögren’s syndrome and Felty syndrome also occur.