原发性颌面部成釉细胞瘤临床特征及MRI检查影像学表现

目的探讨原发性颌面部成釉细胞瘤临床特征及MRI检查影像学表现。方法选取我院2016年6月至2018年6月收治的原发性颌面部成釉细胞瘤患者46例,手术前均进行了MRI检查,根据资料对患者的临床特征及影像表现特征进行总结分析。结果原发性颌面部成釉细胞瘤患者的临床特征多表现为:面部肿胀不适,局部膨隆、质硬,按之有乒乓球感,少数患者出现牙松动、移位甚至脱落现象,部分患者出现轻压痛或疼痛症状,极个别患者有下唇麻木及张口受限现象产生。46例患者中在MRI扫描上表现为:21例(45.65%)为囊性肿块,15例患者病灶部位在T₁WI上呈现为低信号,在T₂WI序列中呈现为高信号;6例患者在T₁WI、T₂WI上均呈现为高信号,于肿块内有液-液平面出现。5例(10.87%)为实性肿块,病灶部位在T₁WI上呈现为低信号,在T₂WI序列中呈现为等信号,边界清晰。囊实性20例(43.48%),病灶部位在T₁WI上出现低信号改变,在T₂WI序列中,肿瘤区域出现高信号区改变。结论 MRI扫描检查可有效显示原发性颌面部成釉细胞瘤病灶部位及图像特征以及病变性质。

Clinical Features and Imaging Findings of Primary Ameloblastoma in Maxillofacial Region

Objective To investigate the clinical features and imaging findings of primary maxillofacial ameloblastoma.Methods 46 patients with primary maxillofacial ameloblastoma admitted to our hospital from June 2016 to June 2018 were examined by MRI before operation.And the clinical and imaging features were summarized and analyzed according to the data.Results Most of the clinical features of primary maxillofacial ameloblastoma were:Facial swelling and discomfort,local swelling and rigidity,and a sense of ping-pong ball,and a few patients had loose teeth,displacement and even exfoliation.Some patients had mild tenderness or pain symptoms,and very few patients had lower lip numbness and mouth opening restriction.In 46 patients,21 cases(45.65%)were cystic masses,15 cases showed low signal on T₁WI and high signal on T₂WI,6 cases showed high signal on T₁WI and T₂WI,and liquid-liquid level appeared in the masses.Five cases(10.87%)were solid masses.The lesions showed low signal on T₁WI,equal signal on T₂WI and clear boundary.Twenty cases(43.48%)had cystic-solid lesions.The lesions showed low signal on T₁WI.In the sequence of T₂WI,high signal areas appeared in the tumors.Conclusion MRI scanning can effectively display the location and image features of primary maxillofacial ameloblastoma and the nature of the lesion.