【摘要】 目的研究头颈部外周性原始神经外胚层瘤(pPNET)的CT及MR表现,提高影像学检查在本病诊治中的价值的认识。方法随访2年,回顾性分析6例头颈部pPNET的临床、CT、MRI及病理所见。结果6例患者手术病理为原始神经外胚层瘤,1例眼眶内肿块较小,在CT及MRI上边界清晰,密度及信号均匀。4例颈部、1例腮腺肿块较大,病灶坏死囊变不明显,病灶与邻近的组织分界不清。所有肿块增强强化明显。结论头颈部pPNET的CT、MRI表现为边界清晰者手术易于切除,预后相对较好,病灶边界不清则手术难以切除,预后差。更多还原

【Abstract】 Objective To study the appearances of CT and MRI in peripheral primitive neuroectoderal tumor(pPNET)of the head and neck. Methods Six peripheral primitive neuroectoderal tumor(pPNET)of the head andneck with data of the appearances of CT and MRI,pathology and the clinical representation were retrospectively analyzed after two years follow up. Results 6 cases of pPNET were demonstrated by pathlogy. 1 case showed a small tumor with homogeneous density or signal in orbital cavity on the CT and MRI. 1case in parotid and 4 cases in neck,which showed large masses with inhomogeneous density or signal,and ill-defined border. All tumors demonstrated heterogeneous contrast enhancement. Conclusion The mass of pPNET with well-defined border on CT and MRI in the head and neck was easy to resect and the prognosis was well,if not,it was difficult to resect,and the prognosis was awful.更多还原