国际神经病学神经外科学杂志2012，Vol.39Issue(2)：138-142,5.
WHOⅠ、Ⅱ、Ⅲ级脑膜瘤MRI表现的差异
The Differences in Magnetic Resonance Imaging Features Of WHO Grade Ⅰ, Ⅱ and Ⅲ Meningiomas
摘要
Abstract
Objective To investigate the differences in magnetic resonance imaging features among the WHO grade Ⅰ, Ⅱ and Ⅲ men-ingiomas. Methods We retrospectively studied the Magnetic Resonance Imaging features of WHO grade Ⅱ (31 cases) and WHO grade Ⅲ (15 cases) meningionias, which were compared with WHO grade I meningiomas (51 cases). Results The shapes of WHO grade I meningiomas were predominantly rounded. The rate of lobular shape of WHO grade Ⅱ meningiomas was higher than that of WHO grade Ⅰ meningiomas. While most of the shapes of WHO grade Ⅲ meningiomas were lobular (P = 0.0400). The largest diameters of WHO grade Ⅰ, Ⅱ and Ⅲ meningiomas were 4.6cm, 4.5cm and 4. 8cm respectively (P =0.7790). WHO grade Ⅰ, Ⅱ and Ⅲ meningiomas with heterogeneous intensity 73. 3% (P = 0. 0150), and with heterogeneous contrast enhancement respectively (P = 0.0011). Dural tail could be found in WHO grade Ⅰ, Ⅱ and Ⅲ meningiomas( P = 0.0579). There are partial or complete disappearance of the peritumoral band in WHO I ,Ⅱ and Ⅲ(P =0.0002). The rates of intratumoral cysts of WHO grade Ⅱ and grade ID meningiomas ate higher than that of WHO grade I meningiomas. There are no significant differences in peritumoral cysts and peritumoral edema association with meningiomas amoung WHO grade Ⅰ, Ⅱ and Ⅲ meningiomas. Conclusions The shapes of WHO grade I meningiomas are predominantly rounded. The rates of lobular shape of WHO grade Ⅱ and Ⅲ meningiomas are higher than that of WHO grade I meningionias. WHO grade II and Ⅲ meningiomas are more common displaying heterogeneous intensity, and heterogeneous contrast enhancement comparing with WHO grade I meningiomas. The incidences of partial or complete disappearance of the peritumoral band of WHO grade Ⅱ and Ⅲ meningionias increase dramatically, while the rates of dural tail of WHO grade Ⅱ and Ⅲ meningiomas decrease slightly. Intratumoral cysts relate to higher occurrence of WHO grade Ⅱ and Ⅲ meningiomas, while peritumoral cysts were independent of it. There are no significant differences about peritumoral edema amoung WHO grade Ⅰ, Ⅱ and Ⅲ meningiomas.关键词
脑膜瘤/WHO分级/磁共振成像/诊断Key words
meningioma/ WHO grade / Magnetic Resonance Imaging/ diagnose引用本文复制引用
岳英杰,费昶,张健,郑学军,王希高,郭锋..WHOⅠ、Ⅱ、Ⅲ级脑膜瘤MRI表现的差异[J].国际神经病学神经外科学杂志,2012,39(2):138-142,5.基金项目
山东省科技攻关项目资助(2008GG30002057) （2008GG30002057）
