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Colpocephaly:CT manifestation

ZHOU Yi-Cheng,JIA Qing.Department of Radiology,Tongji Hospital,Tongji Medical College,Huazhong University of Science and Technology,Wuhan 430030,P.R.China  
Objective:To present and analyse the CT manifestations of 4 cases of colpocephaly,so that it can be easily recognized.Methods:There were 4 boys with colpocephaly,age range 10 days to 5 years.The cranial CT axial scans with 10mm thickness were performed in 4 cases.Results:The conditions were identified by CT scan.All of them had the disproportionate enlargement of the occipital horns and atria of lateral ventricles.2 cases had frontal horn abnormality,dilating third ventricles,and abnormal corpus callosum.There was no abnormality of the gray matter around the occipital and parietal lobe,but with abnormal thin white matter.Conclusion:Colpocephaly is a very rare disease in children.It has a typical CT findings of dilated occipital horn and atria without abnormal thickness of gray matter.Till now no definitive mechanism for the development of colpocephaly has been elucidated.
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