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Neurocirugía

versión impresa ISSN 1130-1473

Resumen

SAMPRON, N.; ARRAZOLA, M.  y  URCULO, E.. Skull base plasmacytoma with craniocervical instability. Neurocirugía [online]. 2009, vol.20, n.5, pp.478-483. ISSN 1130-1473.

Introduction: Cranio-cervical instability is, in some cases, the main surgical concern in posterior skull base tumors. We report on a case in which a solitary plasmacytoma of the skull base presented with cranio-cervical instability. Vertebral artery was injured during surgery. The surgical anatomy is reviewed, with emphasis in vascular complications avoidance. Case report: A 66 year-old woman was diagnosed of a cranial base solitary plasmacytoma and treated with radio and chemotherapy with complete remission. After receiving that treatment, she presented with tetraparesis and a cranio-cervical instability was diagnosed. She was operated on, under cranial traction, of posterior occipito-cervical instrumentation with C1 to C2 transarticular Magerl screws. The right vertebral artery was injured during surgery without additional neurological deficit. Two years after the operation she remains independent for daily activities. Conclusions: Transarticular screws at the C1 to C2 level of the cervical spine may provide rigid fixation in posterior cranio-cervical instrumentation for osteolytic lesions, but there is a risk of injury to the vertebral artery, specially when some variations in the surgical anatomy exist.

Palabras clave : Skull base; Solitary plasmacytoma; Craniocervical instability; Screw; Vertebral artery.

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