Resolution of syringomyelia in ten cases of "up-and-down Chiari malformation" after posterior fossa decompression.
The authors describe ten cases of syringomyelia without hindbrain herniation depicted by preoperative magnetic resonance imaging (MRI) in supine position. However, the herniation was observed in all cases during the operation with the patient in sitting position. The postoperative MRI revealed an intense reduction of the syrinx in all patients, as well as it was also observed a clinical amelioration in all cases. The surgical treatment was based on a large craniectomy with the patient in sitting position, tonsillectomy, large opening of the fourth ventricle and duraplasty with creation of a large cisterna magna.
Neurosurgical Division, Hospital Unimed, João Pessoa, PB, Brazil. jags1803@hotmail.com
José Alberto Gonçalves da
JA
Silva
Luiz Ricardo Santiago
LR
Melo
Antônio Fernandes de
AF
Araújo
Adailton Arcanjo Dos
AA
Santos
D000328:Adult; D001139:Arnold-Chiari Malformation / Q000150:complications / Q000601:surgery*; D003388:Cranial Fossa, Posterior / Q000601:surgery*; D056424:Decompressive Craniectomy / Q000379:methods*; D004388:Dura Mater / Q000601:surgery*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D056888:Patient Positioning; D012189:Retrospective Studies; D013595:Syringomyelia / Q000209:etiology / Q000601:surgery*; D016896:Treatment Outcome