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KMID : 0361819980170030282
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Journal of the Korean Society of Medical Ultrasound
1998 Volume.17 No. 3 p.282 ~ p.283
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Prominent Extraaxial CSF Space on Cranial Ultrasound : Correlation with Neurodevelopmental Outcome
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Bokyung Kim Han
Mun Hyang Lee/Hye Kyung Yoon/Chan Kyo Kim/Min Ju Kim
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Abstract
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Purpose : The purpose of this study is to determine the clinical significance of prominent extraaxial CSF spaces(EACSFS) on cranial ultrasound.
Materials and Methods : We have included additional coronal images with 7 MHz linear array transducer in 76 infants (58 preterm, 17 term) whose routine cranial ultrasound showed prominent EACSFS. Routine cranial ultrasound images were obtained by using real time ultrasound(Acuson 128 XP-10, Acuson, Inc., Mountain View, CA) with a 7 MHz sector transducer.
Results : The degree of prominence of EACSFS was mostly moderate both neurodevelopmentally normal and abnormal groups. The size of EACSFS did not appear to predict neurodevelopmental outcome. Cranial ultrasound of fifty-five of 60 neurodevelopmentally normal patients showed subependymomal hemorrhage/cyst or no other associated abnormality. In neurodevelopmentally abnormal group, five of 15 patients had no other associated abnormality or had subependymal hemorrhage or cysts. Eight of 15 patients with neurologically abnormal group showed cystic PVL or evidence of brain atrophy. None of these findings were seen in normal group. Thirty-eight patients with normal and seven patients with abnormal neurodevelopmental evaluation had one or more follow-up head ultrasound examination. The change in prominent EACSFS did not seem to be correlated with neurodevelopmental outcome.
Conclusion : The prominent EACSFS on head ultrasound without other associated abnormalities or with grade 1 hemorrhage or cyst did not appear to have clinical significance. Significantly abnormal neurodevelopmental outcome is likely related to associated major abnormalities seen on head ultrasound such as cystic PVL, brain atrophy or marked ventriculomegaly. No follow-up examinations are necessory in infants whose cranial ultrasound showed prominent EACSFS not associated with other abnormalities.
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