Abstract

Info

Title:: Differentiating between microcystic meningioma and meningeal Ewing sarcoma/peripheral primitive neuroectodermal tumor using magnetic resonance imaging

Author(s):: ZHANG Jing1; ZHAO Zhiyong2; 3; 4; ZHANG Guojin2; 3; 4; CAO Yuntai2; 3; 4; ZHOU Junlin2; 3; 4; 1. the Fifth Affiliated Hospital of Zunyi Medical University, Zhuhai 519100,China 2. Department of Radiology, Lanzhou University Second Hospital, Lanzhou 730030, China 3. the Second Clinical Medical School, Lanzhou University, Lanzhou 730030, China 4. Key Laboratory of Medical Imaging of Gansu Province, Lanzhou 730030, China

Keywords:: Keywords: Ewing sarcoma magnetic resonance imaging microcystic meningioma peripheral primitive neuroectodermal tumor

Abstract:: Abstract: Objective To explore the magnetic resonance imaging (MRI) features of microcystic meningioma and meningeal Ewing sarcoma/peripheral primitive neuroectodermal tumor (pPNET). Methods The clinical, imaging and pathological data of 14 cases of pathologically confirmed microcystic meningioma and 10 cases of pathologically confirmed meningeal Ewing sarcoma/pPNET were retrospectively analyzed, and the differences in MRI features were analyzed, referring to relevant literatures. Results The MRI features such as tumor morphology, T2 signal, enhanced features, bone invasion and distant metastasis of microcystic meningiomas were different from those of meningeal Ewing sarcoma/pPNET, with statistical significances (P<0.05), while no statistical difference was found in T1 signal, dural tail sign and peritumoral edema (P>0.05). Conclusion There are differences in the imaging features of microcystic meningioma and meningeal Ewing sarcoma/pPNET. Preoperative accurate differential diagnosis contributes to improving clinical decision-making and prognosis prediction.