脊柱不典型单发转移性恶性黑色素瘤的MRI表现:与脊柱血管瘤鉴别

发布时间：2018-05-07 02:27

本文选题：黑色素瘤 + 脊柱　；参考：《中国介入影像与治疗学》2017年04期

【摘要】：目的探讨MRI对脊柱不典型单发转移性恶性黑色素瘤与血管瘤的鉴别诊断价值。方法回顾性分析13例脊柱不典型单发转移性黑色素瘤患者及40例脊柱单发血管瘤患者。对所有患者均行1.5T MR扫描,采用T1W、T2W、脂肪抑制T2W序列和增强扫描。观察病灶的信号特征,平扫分为低、等、高信号,增强扫描分为低、等、稍高及明显强化。测量病灶的最长径,然后取平均值。结果脊柱单发转移性黑色素瘤T1WI低、等及高信号比例分别为76.92%(10/13)、15.38%(2/13)及7.69%(1/13),T2WI低、等及高信号比例分别为61.54%(8/13),30.77%(4/13)及7.69%(1/13);92.31%(12/13)的脊柱单发转移性恶性黑色素瘤增强扫描表现为明显强化。与脊柱血管瘤比较,转移性黑色素瘤长径大于血管瘤(P0.001)。脊柱血管瘤和不典型转移性黑色素瘤之间T1WI与T2WI信号特征、增强扫描强化特征差异均有统计学意义(P均0.05)。结论MRI对鉴别脊柱单发不典型转移性黑色素瘤与血管瘤有一定的临床应用价值。
[Abstract]:Objective to investigate the value of MRI in differential diagnosis of single metastatic malignant melanoma and hemangioma of spinal column. Methods Thirteen patients with atypical metastatic melanoma of the spinal column and 40 patients with single spinal hemangioma were retrospectively analyzed. All patients underwent 1.5 T Mr scan with T 1 W T 2 W, fat suppression T 2 W sequence and enhanced scan. The signal characteristics of the lesions were observed. Plain scan was divided into low, equal, high signal intensity, and enhanced scan was low, equal, slightly high and obviously enhanced. The longest diameter of the lesion was measured and the mean value was taken. Results the T1WI of single metastatic melanoma of spinal column was low, the ratio of isointense and high signal was 76.92% and 15.38% (10 / 13) and 7.6969 / 1 / 13 / 13 T _ 2WI respectively. The ratio of isointense and high signal was 61.54 / 813 / 30. 7774 / 13) and 7.6911 / 131 / 92.31 / 12 / 13, respectively. Compared with spinal hemangioma, metastatic melanoma had a longer diameter than hemangioma (P 0.001). There were significant differences in T1WI and T2WI signal and enhanced enhancement between spinal hemangioma and atypical metastatic melanoma (P < 0.05). Conclusion MRI is valuable in differentiating single metastatic melanoma from hemangioma.
【作者单位】：北京大学肿瘤医院暨北京市肿瘤防治研究所医学影像科恶性肿瘤发病机制及转化研究教育部重点实验室;
【基金】：国家自然科学基金(81471640、81371715)
【分类号】：R738.1;R445.2

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