鼻腔原发性恶性黑色素瘤的CT及MRI分析

发布时间：2018-03-13 11:35

本文选题：鼻腔　切入点：黑色素瘤　出处：《中国医学计算机成像杂志》2017年01期 　论文类型：期刊论文

【摘要】：目的:探讨鼻腔原发性恶性黑色素瘤的CT及MRI特征,以帮助诊断。方法:经病理证实的13例鼻腔原发性恶性黑色素瘤患者(女8例,男5例,平均年龄70.8岁)纳入研究,分析其CT及MRI表现,包括病灶部位、侵及范围、骨质破坏、密度/信号特点以及增强后强化程度等。结果:12例病灶发生在单侧鼻腔,1例发生在双侧;12例(12/13)邻近骨质吸收伴部分破坏;肿瘤呈稍低、等及稍高的软组织密度;9例(9/12)在T2WI上与脑实质信号比较呈等或稍低信号,3例(3/12)呈等、高混杂信号,2例(2/12)在T1WI上呈明显高信号,10例(10/12)呈等及稍低信号;增强扫描后3例(3/12)明显强化,9例(9/12)呈轻中度强化。结论:CT和MRI能很好地显示肿瘤的部位、周围骨质破坏和邻近重要结构的侵犯,鼻腔原发性恶性黑色素瘤MR-T2WI等或稍低信号、轻中度强化,具有一定的特征性可帮助诊断;但T2WI稍高信号表现是不典型的,诊断需依靠病理检查。
[Abstract]:Objective: to investigate the CT and MRI features of primary malignant melanoma in nasal cavity for diagnosis. Methods: 13 cases of primary malignant melanoma of nasal cavity (8 female and 5 male, mean age 70.8 years) were included in the study. Ct and MRI findings, including location, extent of invasion and bone destruction, were analyzed. Results 12 lesions occurred in unilateral nasal cavity, 1 case occurred in bilateral nasal cavity, 12 cases occurred in bilateral nasal cavity, 12 cases had bone resorption and partial destruction, and the tumor was slightly lower. 9 / 12 (9 / 12) of iso-and slightly higher density of soft tissue were isotropic or slightly hypointense than that of cerebral parenchyma on T2WI, and 2 / 12 (2 / 12) of hyper-mixed signal on T _ 1WI showed high signal intensity (10 / 12) and low signal intensity (10 / 12) in 10 / 12 cases respectively on T _ 1WI. 9 / 12 of 9 / 12) showed mild and moderate enhancement. Conclusion: Ct and MRI can well show the location of tumor, the destruction of surrounding bone and the invasion of adjacent important structure, and the primary malignant melanoma of nasal cavity, such as MR-T2WI, etc. Mild and moderate enhancement can be helpful in diagnosis, but slightly high signal intensity on T 2WI is not typical, and the diagnosis depends on pathological examination.
【作者单位】：新疆医科大学第一附属医院影像中心;
【分类号】：R445.2;R739.62;R730.44

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