| Sonographic characteristics of the cavum velum interpositum. | |
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MedLine Citation:
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PMID: 9802483 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND AND PURPOSE: Differential considerations for pineal region CSF collections include both true cysts and normal cystlike anatomic variations. Our purpose was to determine the sonographic characteristics of pineal region fluid spaces that reflect the presence of a normal persistent cavum velum interpositum (CVI). METHODS: Eighteen neonates and infants who had sonographic findings of "cysts" in the pineal region were examined prospectively with conventional sonography and color Doppler sonography to evaluate the shape of the fluid collection and its anatomic relationship with the color-coded internal cerebral veins. Subsequent MR images were obtained in eight of these infants to determine the exact nature of the cystlike collections. RESULTS: The cystlike spaces in the pineal region were of an inverted helmet shape in 14 subjects and roundish in four. All were situated inferior or slightly anteroinferior to the splenium of the corpus callosum and 2.5 to 4 mm away from the quadrigeminal plate. The internal cerebral veins were either inferior (n = 12) or inferolateral (n = 6) to the cystlike spaces at sonography. Subsequent MR studies confirmed eight of these cystlike spaces to be the posterior portion of the CVI. CONCLUSION: The CVI may appear as a cyst in the pineal region on neonatal sonograms. Usually, it has a characteristic inverted helmet shape and is situated beneath the fornices and above the internal cerebral veins. |
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Authors:
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C Y Chen; F H Chen; C C Lee; K W Lee; H S Hsiao |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: AJNR. American journal of neuroradiology Volume: 19 ISSN: 0195-6108 ISO Abbreviation: AJNR Am J Neuroradiol Publication Date: 1998 Oct |
Date Detail:
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Created Date: 1999-01-15 Completed Date: 1999-01-15 Revised Date: 2008-02-14 |
Medline Journal Info:
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Nlm Unique ID: 8003708 Medline TA: AJNR Am J Neuroradiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1631-5 Citation Subset: IM |
Affiliation:
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Department of Radiology, Tri-Service General Hospital, Taipei, Taiwan, Republic of China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Brain Diseases
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diagnosis Cerebral Veins / pathology, ultrasonography Cerebral Ventricles / pathology, ultrasonography* Cerebrospinal Fluid / metabolism Cysts / diagnosis Humans Infant, Newborn Magnetic Resonance Imaging Pineal Gland / metabolism, pathology, ultrasonography* Prospective Studies Septum Pellucidum / pathology, ultrasonography Ultrasonography Ultrasonography, Doppler, Color |
| Comments/Corrections | |
Comment In:
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AJNR Am J Neuroradiol. 2000 Mar;21(3):612-4
[PMID:
10730668
]
AJNR Am J Neuroradiol. 1999 Aug;20(7):1383-4 [PMID: 10473003 ] |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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