Incidence of basilar invagination in patients with tonsillar herniation – a case control craniometrical study



Document title: Incidence of basilar invagination in patients with tonsillar herniation – a case control craniometrical study
Journal: Arquivos de neuro-psiquiatria
Database: PERIÓDICA
System number: 000378643
ISSN: 0004-282X
Authors: 1
1
1
1
1
1
2
Institutions: 1Universidade Estadual de Campinas, Departamento de Neurologia, Sao Paulo. Brasil
2Northwestern University, Orthopedic Surgery, Chicago, Illinois. Estados Unidos de América
Year:
Season: Sep
Volumen: 72
Number: 9
Pages: 706-711
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Aplicado, analítico
English abstract A retrospective case-control study based on craniometrical evaluation was performed to evaluate the incidence of basilar invagination (BI). Patients with symptomatic tonsillar herniation treated surgically had craniometrical parameters evaluated based on CT scan reconstructions before surgery. BI was diagnosed when the tip of the odontoid trespassed the Chamberlain’s line in three different thresholds found in the literature: 2, 5 or 6.6 mm. In the surgical group (SU), the mean distance of the tip of the odontoid process above the Chamberlain’s line was 12 mm versus 1.2 mm in the control (CO) group (p<0.0001). The number of patients with BI according to the threshold used (2, 5 or 6.6 mm) in the SU group was respectively 19 (95%), 16 (80%) and 15 (75%) and in the CO group it was 15 (37%), 4 (10%) and 2 (5%)
Portuguese abstract Realizamos estudo retrospectivo tipo caso-controle baseado na avaliação craniométrica para avaliar a incidência da Invaginação Basilar (IB). Pacientes com herniação tonsilar sintomática tratada cirurgicamente foram avaliados quanto a parâmetros craniométricos obtidos em reconstrução de TC antes da cirurgia. IB foi diagnosticada quando a ponta do odontóide passava acima da linha de Chamberlain em 2, 5 ou 6,6 mm. No grupo cirúrgico (CI), a distância média da ponta do odontóide acima da linha de Chamberlain foi de 12 mm versus 1,2 mm no grupo controle (CO) (p<0.0001). O número de pacientes com IB conforme o critério diagnóstico usado (2, 5 ou 6,6 mm) foi de 19 (95%), 16 (80%) e 15 (75%) no grupo CI, respectivamente, contra 15 (37%), 4 (10%) e 2 (5%) no grupo CO. Pacientes com herniação tonsilar tinham maior incidência de IB comparados ao grupo controle
Disciplines: Medicina
Keyword: Cirugía,
Diagnóstico,
Neurología,
Invaginación,
Hueso occipital,
Columna cervical,
Base del cráneo,
Hernia tonsilar,
Malformación de Chiari,
Craneometría
Keyword: Medicine,
Diagnosis,
Neurology,
Surgery,
Invagination,
Occipital bone,
Cervical column,
Skull base,
Tonsillar herniation,
Chiari malformation,
Craniometry
Full text: Texto completo (Ver HTML)