title: Midcervical flexion myelopathy after posterior fossa surgery in the sitting position: case report.
abstract: Midcervical Quadriplegia is a well-known complication of posterior fossa surgery performed with the patient in the sitting position. The case of a 24-year-old man with a fourth ventricular choroid plexus papilloma is described. The patient developed reversible quadriparesis after surgery in the sitting position; postoperative magnetic resonance imaging demonstrated a hyperintense area within the cervical cord at C5-C6 on T2-weighted images, which was considered to represent "midcervical flexion myelopathy." It is suggested that the prolonged stretch and compression of the cervical cord is the pathogenesis of this serious complication.
authors.affiliation: Department of Neurosurgery, National Medical Center and International Cooperation, Tokyo, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Haisa
authors.forename: T
authors.initials: T
authors.lastname: Kondo
mesh_terms: D000328:Adult; D016545:Choroid Plexus Neoplasms / Q000601:surgery*; D005500:Follow-Up Studies; D005910:Glioma / Q000601:surgery*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009460:Neurologic Examination; D011183:Postoperative Complications / Q000175:diagnosis*; D011187:Posture / Q000502:physiology*; D011782:Quadriplegia / Q000175:diagnosis; D013117:Spinal Cord Compression / Q000175:diagnosis*; D013119:Spinal Cord Injuries / Q000175:diagnosis*