POSTNATAL-DEVELOPMENT OF THE CENTRAL SKULL BASE - NORMAL VARIANTS
POSTNATAL-DEVELOPMENT OF THE CENTRAL SKULL BASE - NORMAL VARIANTS
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DOI：
10.1148/radiology.196.3.7644640
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发表时间：
1995-09-01
期刊：
影响因子：
19.7
通讯作者：
ELSTER, AD
中科院分区：
文献类型：
--
作者：
MADELINE, LA;ELSTER, AD
目得：为了说明正常的变异和发育异常的颅底CT扫描（CT）scanes.MATERIALS和METHODS：一百八十九名儿童（年龄范围，新生儿至18岁，中位年龄，4.0岁）没有颅底畸形被称为颅CT。蝶骨和枕骨的正常发育变异的特点。发现了16种正常的中央颅底发育变异，包括蝶骨前前孔、蝶骨后前部颅咽管残留、蝶骨中央圆形缺损、基枕骨和基蝶骨沿着裂隙、基骨变异、基枕骨中线脊索残留、结论：16例Kerckring小骨与枕骨上枕部融合变异的CT表现与其胚胎起源有关。认识到这些变异可能证明有必要在评价患者的骨骼发育不良和颅底发育障碍。
PURPOSE: To illustrate the normal variants and developmental anomalies of the skull base on computed tomographic (CT) scans.MATERIALS AND METHODS: One hundred eighty-nine children (age range, newborn to 18 years; median age, 4.0 years) without skull base deformity were referred for cranial CT. Normal developmental variants in the sphenoid and occipital bones were characterized.RESULTS: Sixteen normal variants of central skull base development were identified including anterior foramen in the presphenoid, remnant of the craniopharyngeal canal in the anterior portion of the postsphenoid, rounded defects in the central sphenoid, clefts and fissures along the basiocciput and basisphenoid, basioticum variants, notochordal remnant in the midline of the basiocciput, and fusion variants of the Kerckring ossicle with the supraoccipital portion of the occipital bone.CONCLUSION: The location and CT appearance of the 16 variants and anomalies are related to the known embryologic origin of this region. Recognition of such variants may prove necessary in evaluation of patients with skeletal dysplasias and disorders of skull base development.