Prassopoulos P, Cavouras D, Golfinopoulos S, Nezi M
Department of Diagnostic Radiology, University Hospital, Medical School of Crete, Greece.
Neuroradiology. 1995 Jul;37(5):418-21. doi: 10.1007/BF00588027.
The aim of this study was to quantify the intra- and extraventricular cerebrospinal fluid (CSF) spaces in children with benign enlargement of the frontal subarachnoid space (BE). The infra- and supratentorial CSF compartments were measured in 61 CT examinations of children with BE, 3-27 months old, and compared with those of 96 CT examinations considered normal. Measurements of the ventricular system, and the pontine and chiasmatic cisterns were related to cranial size. In all children with BE the lateral and third ventricles were dilated and the chiasmatic cistern was widened. The subarachnoid space was wider than the upper limits in the control group, in the frontal region (4 mm), and the anterior interhemispheric (4 mm) and Sylvian (3 mm) fissures. The infratentorial CSF compartments, the occipital subarachnoid space, the posterior part of the interhemispheric fissure and, in most cases, the cortical sulci were normal in size in children with BE. The majority were macrocephalic or had rapid head growth but there were also normocephalic children with normal head growth. The size of the posterior fossa was within the normal range in all children with BE. Idiopathic BE is not uncommon in children up to about 3 years old who are healthy or have minimal neurological disturbance and is characterised by a specific pattern of widening of the supratentorial CSF compartments.
本研究的目的是量化额下蛛网膜下腔良性扩大（BE）患儿的脑室内和脑室外脑脊液（CSF）间隙。对61例年龄在3至27个月的BE患儿进行CT检查，测量幕下和幕上CSF腔，并与96例被认为正常的CT检查结果进行比较。测量脑室系统、脑桥池和视交叉池与颅骨大小相关。所有BE患儿的侧脑室和第三脑室均扩张，视交叉池增宽。蛛网膜下腔比对照组上限更宽，在额叶区域（4mm）、大脑半球间前部（4mm）和外侧裂（3mm）。BE患儿的幕下CSF腔、枕下蛛网膜下腔、大脑半球间裂后部以及大多数情况下的皮质沟大小正常。大多数患儿为巨头畸形或头部快速生长，但也有头部大小正常且生长正常的患儿。所有BE患儿的后颅窝大小均在正常范围内。特发性BE在3岁左右以下健康或仅有轻微神经功能障碍的儿童中并不少见，其特征是幕上CSF腔有特定的增宽模式。
