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Magnetic Resonance Imaging Findings and Basic Studies of the Dural Tail Sign

Author: ZhaoYiLei
Tutor: ChengJingLiang
School: Zhengzhou University
Course: Imaging diagnosis of central nervous system diseases
Keywords: Meningiomas Dural tail sign Magnetic resonance imaging Pathology
CLC: R739.45
Type: Master's thesis
Year: 2005
Downloads: 65
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Abstract

Background and purpose: dural tail sign is to enhance contrast magnetic resonance imaging (magnetic resonance imaging, MRI) images is considered thickening of the meninges, named due to like extending from meningioma body, \a tumor characteristic signs. Meningioma dural tail sign of Pathology basic research rarely reported. Initially, the dural tail sign meningioma adjacent dura result of direct invasion, but the study found no direct signs of infiltration of the tumor tissue and part meningioma dural tail sign Organization, and is considered a non-biological reactivity changes, including local reactive hyperemia, tissue proliferation, angiogenesis, vascular permeability enhancement and meningeal blood vessels to dilate. Theoretically any cause meningeal irritation can produce this enhanced dural tail sign. Dural tail sign for meningioma tumor infiltration or the result of the inflammatory response, whether surgery should routinely be removed remains controversial. We collect by MRI enhancement found and confirmed by surgical resection dural tail sign of 45 cases of meningioma, dural tail sign of Pathology basic research, to investigate the pathologic basis and clinical significance of meningioma dural tail sign. MATERIALS AND METHODS: From October 2003 to September 2004 in the First Affiliated Hospital of Zhengzhou University MRI revealed meningioma patients 45 cases of dural tail sign \ages 9 to 80 years, mean 50.9 ± 12.7 years. The time from onset to first MRI examination for 1 day to 2 years, and the average duration of 6.3 months. Surgical resection of the dural tail sign after meningioma tissue with do histopathological examination. All cases checks are completed in Germany SIEMENS superconducting 1.0 T magnetic resonance imaging system. The MRI observed indicators include ① tumor single, multiple, and whether the leaf form, the edge is smooth, whether the boundary with the surrounding normal brain tissue; ② tumor signal intensity and uniformity; (3) inside the tumor enhanced uniformity and dural tail sign situation; the ④ neoplasia weeks edema; ⑤ adjacent tissue structures invasion. Pathological examination of the contents of the meningioma tumor ① tumor grading and classification; ② tumor capsule is complete and its composition. \Compare \

Magnetic Resonance Imaging Findings and Basic Studies of the Dural Tail Sign

Abstract

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