MIDCERVICAL FLEXION MYELOPATHY AFTER POSTERIOR-FOSSA SURGERY IN THE SITTING POSITION - CASE-REPORT

MIDCERVICAL QUADRIPLEGIA IS a well-known complication of posterior fos sa surgery performed with the patient in the sitting position. The cas e of a 24-year-old man with a fourth ventricular choroid plexus papill oma is described. The patient developed reversible quadriparesis after surgery in the sitting position; postoperative magnetic resonance ima ging demonstrated a hyperintense area within the cervical cord at C5-C 6 on T2-weighted images, which was considered to represent ''midcervic al flexion myelopathy.'' It is suggested that the prolonged stretch an d compression of the cervical cord is the pathogenesis of this serious complication.