摘要
目的：探讨Arnold-Chiari畸形（ACM）MRI表现．并评价MRI对其早期诊断及预测病情进展的临床价值。方法：27例ACM均经MRI诊断、手术及临床证实。其中男性11例．女性16例。年龄8～56岁，平均31岁。结果：小脑扁桃体疝至枕大孔平面下5～26mm20例，2～4mm7例；25例扁桃体前池变形，其中扁桃体前池消失或颈延髓扭曲成角11例；伴脊髓空洞13例。结论：小脑扁桃体位于枕大孔下≥5mm即可诊断ACM，对〈5mm者，在诊断ACM前须注意正常扁桃体暂时低位；小脑扁桃体前池消失或颈延髓扭曲成角，表示延髓受压，患者病情将迅速恶化。
Objective：To investigate the MRI manifestations of Arnold -Chiari malformation （ACM） and evaluate their clinical value in the early diagnosis and prediction of the changes in clinical status. Methods：All 27 cases of ACM were diagnosed by MRI and clinically confirmed by surgery. Among them, 11 cases were male and 16 female,the patients ranged in age from 8 to 56 years（mean age 31 years）. Results：The cerebellar tonsils of 20 cases herniated 5～26mm below the magnum foramen, 7 cases 2 4mm～deformity of the cerebrospinal fluid（CSF） space anterior to the tonsils was found in 25 cases, 11 cases had loss of the CSF space anterior to the tonsils or had the distorted angled medulla oblongata, 13 cases had the cavity of spinal cord. Conclusion：Tonsils hernia ≥5mm below the magnum foramen may be diagnosed as ACM;the temporary low site of normal tonsils must be excluded in the cases of tonsils hernia 〈5mm before the diagnosis of ACM;the loss of the CSF spaces anterior to the tonsils or distorted angled medulla oblongata may predict compressed medulla oblongata and clinical deterioration of the condition.
出处
《黑龙江医药科学》
2007年第1期34-35,共2页
Heilongjiang Medicine and Pharmacy
