摘要
目的：提高幕上室管膜瘤ＣＴ诊断的正确性。材料与方法：回顾分析３９例经手术病理证实为幕上室管膜瘤的ＣＴ表现，肿瘤位于脑实质内１９例，脑室内１６例，脑室内外多发瘤灶者４例。结果：脑实质内室管膜瘤典型表现为脑室旁，尤其是侧脑室三角区或前角旁等或混杂密度较大肿块，常伴有囊变和斑点状钙化，肿瘤与脑室壁关系密切。幕上脑室内室管膜瘤常位于侧脑室体部，大多数（７３．３％）瘤内有钙化。恶性室管膜瘤多数（６８．４％）位于脑实质内，囊变常见，强化明显。脑室内外多发瘤灶者提示恶性室管膜瘤。结论：提高对幕上室管膜瘤典型ＣＴ表现的认识，有助于术前定性诊断。
Purpose:ToimprovetheCTdiagnosticaccuracyofsupratentorialependymomas.Materialsandmethods:CTfindingsof39casesofsupratentorialependymomasprovedbyoperationandpathologywereanalysedretrospectively,includingintraparenchymaltumor,19cases,intraven-tricular,16casesandextra-andintra-ventricular,4cases.Results:Intraparenchymalependymomamanifestedasalarge,isodenseormixed-densitymas,frequentlyasociatedwithcysticchangeandcalcification,usualylocatedbesidetheventricles,especialynearthetrigoneorfrontalhornsofthelateralventricles.Supratentorialintraventricularependymomasofteninvolvedthebodyofthelateralventriclewithintratumoralcalcificationin73.3%ofthecases.Mostofthemalignantependymomas(68.4%)werelocatedinthebrainparenchymausualywithcysticchangeandmarkedenhancementaftercontrastinjection.Thepresenceofmultipletumorsbothextra-andintra-ventricularmightpro-videacluetothediagnosisofmalignantependymoma.Conclusion:Identifyingthetypicalmanifesta-tionsofsupratentorialependymomaonCTishelpfulincorrectpreoperativediagnosisofsupratentori-alependymoma.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
1996年第5期325-338,共14页
Chinese Journal of Radiology
