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鼻黏膜原发性恶性黑色素瘤的MRI及MSCT的影像表现 预览

MRI andMSCT Imaging Findings of PrimaryMalignantMelanoma of NasalMucosa
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摘要 目的:探讨鼻黏膜原发性恶性黑色素瘤的MRI/MSCT的影像特点,提高诊断正确率。方法:搜集广西梧州市红十字会医院2012年1月至2018年5月经病理证实的17例鼻黏膜原发性恶性黑色素瘤,MSCT平扫+增强扫描6例;MSCT平扫+MRI扫描11例,分析其影像表现特点。结果:17例患者MSCT平扫中,位于鼻腔12例,鼻咽2例,鼻窦3例;均呈膨胀性生长,形态不规则;肿物密度多呈不均匀的软组织影,未见钙化,4例病灶内见少量出血、坏死;侵犯周围组织15例,其中10例出现骨质吸收、破坏;出现淋巴结转移5例。11例MRI检查中T1WI呈高信号,T2WI呈低信号表现3例;T2WI呈等、稍低信号,T1WI呈等、稍高信号的2例,T2WI、T1WI均呈稍高、高、等混杂信号6例,DWI均呈高信号。MRI及MSCT增强扫描明显不均匀强化6例,轻中度不均匀强化11例。结论:鼻黏膜原发性恶性黑色素瘤在MRI表现有一定的特征,MSCT虽无明显特征,但在病灶对骨质破坏表现上有重要诊断价值,两者应用可提高诊断正确率,为临床分期及治疗提供帮助。 Objective:To investigate the imaging features of primary malignant melanoma of nasal mucosa on MRI/MSCT and to improve the diagnostic accuracy.Methods:Seventeen cases of primary malignant melanoma of nasal mucosa confirmed by pathology from January 2012 to May 2018 in Wuzhou Red Cross Hospital of Guangxi were collected,which six cases were performed MSCT plain scan and enhanced scan,and 11 cases were performed MSCT plain scan andMRI scan.The imaging features were analyzed.Results:Among 17 patients undergoing MSCT examination,12 were located in nasal cavity,2 in nasopharynx and 3 in sinus.All showed expansion growth,irregular shape.The mass density was mostly uneven soft tissue shadow,no calcification was observed,and a small amount of bleeding and necrosis were observed in 4 cases.There were 15 cases of invasion of surrounding tissues,among which 10 cases showed bone absorption and destruction.Lymph node metastasis occurred in 5 cases.Among the eleven patients with MRI examination,3 cases showed hyperintense on T1WI and hypointensity on T2WI,2 cases showed isointensity or little hyerintense on T2WI and isointensity or little hyperintense on T1WI,6 cases showed heterogeneous on T1WI and T2WI.AII the cases showed high signal on DWI.6 cases demonstrated obvious heterogeneous enhancement and 11 cases showed mild heterogeneous enhancement on MRI and MSCT enhanced image.Conclusion:The primary malignant melanoma of nasal mucosa display typical signs on MRI imaging,not specific on MSCT imaging,but MSCT has important diagnostic value in the lesion to bone destruction.Both of them can improve the diagnostic accuracy and provide help for clinical staging and treatment.
出处 《大众科技》 2019年第7期54-56,60共4页 Popular Science & Technology
基金 广西壮族自治区教育厅项目(KY2015LX158)。
关键词 原发黑色素瘤 鼻黏膜 MSCT MRI primary malignant melanoma nasal mucosa MSCT MRI
作者简介 李雪娇(1982-),女,广西梧州人,梧州市红十字会医院CT室主治医师,从事医学影像诊断工作。
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