CT and MRI appearances of peripheral primitive neuroectodermal tumors

VernacularTitle:外周原始神经外胚层肿瘤的 CT及MRI 表现
Author: Kai XIE ; Jian LI ; Honghan GONG ; Junwu YANG
Publication Type:Journal Article
Keywords: primitive neuroectodermal tumors; peripheral; computed tomography; magnetic resonance imaging
From: Journal of Practical Radiology 2016;32(5):757-760
CountryChina
Language:Chinese
Abstract: Objective To explore CT and MRI features of peripheral primitive neuroectodermal tumors (pPNET) .Methods CT and MRI findings were retrospectively analyzed in 9 cases with pPNET confirmed by pathology .Of them ,8 patients underwent CT imaging ,and 5 patients underwent MR imaging .Results The lesions occurred in head and neck in 2 cases ,chest in 3 cases ,scrotum in 1 case ,right scapular region in 1 case ,and lower extremity in 2 cases .The lesions were more solitary (7/9) with round ,lobular or irregular shape .The longest diameter was between 1 .6 cm -13 .8 cm ,and the median diameter was 6 .2 cm .8 cases had blurred boundary .On CT plain scanning ,the lesions were mixed density with predominant isodensity .On MR imaging ,the lesions were slightly T1 hypointensity and heterogeneous T2 hyperintensity .Enhancement patterns were varied ,and the common way was mild‐to‐moderate heterogeneous enhancement .3 cases of them were closely associated with bone ,and showed osteolytic bone destruction . Conclusion The CT and MRI features of pPNET has lack characteristics ,CT and MR imaging have some value for localization diagnosis .