嗅神经母细胞瘤的MRI、MSCT征象分析  

Analysis of MRI and MSCT features of the olfactory neuroblastoma

作　　者：赖伟[1] 单慧明[2] 刘建新[1] 洪桂洵[3] 林晓平[4] 

机构地区：[1]广东医学院附属东莞市第八人民医院放射科,广东东莞523325 [2]北京大学深圳医院放射科,广东深圳518036 [3]中山大学附属第一医院放射科,广东广州510080 [4]中山大学肿瘤防治中心核医学科,广东广州510060

出　　处：《医学影像学杂志》2016年第8期1357-1361,共5页Journal of Medical Imaging

摘　　要：目的分析嗅神经母细胞瘤的MRI、MSCT征象,探讨MRI和MSCT诊断该病的临床价值。方法收集17例经手术、穿刺、病理证实的嗅神经母细胞瘤的临床及影像学资料,回顾性分析其MRI、MSCT表现。结果 14例肿瘤位于单侧鼻腔,其中左侧6例,右侧8例,3例位于双侧鼻腔。A期2例,B期6例,C期9例,D期0例。MRI平扫表现为不规则形肿块,T_1WI呈等、低信号,T_2WI呈高、稍高信号;CT平扫表现为等、低混杂密度肿块,1例见条状、斑片状钙化灶;增强扫描呈轻度至明显强化。7例复发。结论嗅神经母细胞瘤有其好发部位,MRI及MSCT表现出一定的影像特征且能明确肿瘤分期,对临床治疗提供影像依据。Objective To explore the clinical value of MRI and MSCT in the diagnosis of olfactory neuroblastoma by analyzing its MRI and MSCT features. Methods Seventeen cases of olfactory neuroblastoma confirmed by operation, puncture and patholo- gy were enrolled. Their clinical data and MRI and MSCT manifestation were analyzed retrospectively. Results Fourteen cases of tumors located in unilateral nasal cavity, and 6 cases on the left side, 8 cases on the right side. Three cases located in bilateral nasal cavity. Two cases were stage A, 6 stage B, 9 stage C and 0 stage D. The tumor showed to be irregular on MRI plain scan, slightly hypointensity on ZIWI and slightly hyperintensity on T2WI. The tumor showed the mixed density on CT plain scan, one case presented with the stripy and patchy calcification. On MR and CT enhanced scan, the tumors showed slight to moderate en- hancement. The tumors located in stage A were confined to the nasal cavity without invasion of the surrounding structures, and those located in stage B, C with invasion of maxillary sinus, ethmoid sinus, sphenoid sinus, orbital and intracranial tissue in different extent. Seven cases appeared recurrence. Conclusion Olfactory neuroblastoma has its common site and MRI and MSCT features. Imaging examination can evaluate the range of the tumor, and has an important value to the therapeutic selection.

关 键 词：嗅神经母细胞瘤 磁共振成像 体层摄影术 x线计算机 

分 类 号：R739.41[医药卫生—肿瘤] R445.2[医药卫生—临床医学]