RESUMO
BACKGROUND: Dorsal pons cavernoma can be approached through telo-velar approach instead of transvermian approach, with lower risk of neurological deficits since it uses natural clefts to reach the floor of the fourth ventricle. MATERIALS AND METHODS: We present our surgical technique for telo-velar approach to address pathologies of the dorsal pons, assisted by neuronavigation and neuromonitoring. This surgical technique is illustrated by a surgical video of a dorsal pons cavernoma. CONCLUSION: Dorsal pons cavernomas can be reached through telo-velar approach after suboccipital midline craniotomy. The accurate patient positioning, cisternal dissection, and neuromonitoring use are mandatory to avoid neural injuries and identify the safe entry points into the brainstem.
Assuntos
Quarto Ventrículo/cirurgia , Hemangioma Cavernoso/cirurgia , Tonsila Palatina/cirurgia , Ponte/cirurgia , Craniotomia , Dura-Máter/cirurgia , Humanos , Ponte/patologia , Complicações Pós-Operatórias/etiologia , Fatores de RiscoRESUMO
Tumor necrosis factor alpha (TNF-α) is a pro-inflammatory and immunoregulatory cytokine involved in the pathogenesis of several autoimmune disorders. Etanercept, a TNF-α antagonist (anti-TNF-α) acting as a soluble TNF-α receptor, has been associated with neurological demyelinating disorders. This paper aims to report an unusual case showing tumefactive central nervous system (CNS) inflammatory demyelination in a patient in the course of TNF -α antagonist therapy, requiring decompressive hemicraniectomy. This report is based on magnetic resonance imaging (MRI) findings and histology. A biopsy confirmed the inflammatory demyelinating nature of the lesions. The clinical presentation is unusual due to the severity of the disease process, requiring decompressive hemicraniotomy with a clinically favorable outcome.
