孤立性脑干转移瘤的MRI表现

发布时间：2018-06-20 07:39

本文选题：转移瘤 + 孤立性　；参考：《临床放射学杂志》2015年07期

【摘要】：目的分析孤立性脑干转移瘤的MRI表现特征,提高其诊断准确性。方法回顾性分析经病理确诊为脑外肿瘤并经临床诊断为孤立性脑干转移瘤的17例患者的临床资料和MRI表现,分析肿瘤的部位、大小、形态、结构、信号强度、瘤周水肿程度和瘤体的强化特点。结果男8例,女9例,年龄39~69岁,平均55.4岁。脑外原发肿瘤分别为肺癌14例、乳腺癌1例、直肠癌1例、胆囊癌1例。病灶位于桥脑10例、中脑3例、延髓1例、中脑和桥脑2例、桥脑和延髓1例。瘤体最大径1 cm者7例,1~3 cm者9例,3 cm者1例。8个病灶呈实性,6个呈囊实性,1个呈单纯囊性,2个为囊伴壁结节型。增强扫描病灶呈环状强化9例,结节状强化5例,不规则强化2例,花瓣样强化1例。5例无瘤周水肿,轻度水肿7例,中度水肿3例,重度水肿2例。结论孤立性脑干转移瘤的常规MRI表现缺乏一定的特征性,结合功能MRI及其临床资料有助于与其他病变相鉴别。
[Abstract]:Objective to analyze the MRI features of solitary brainstem metastases and to improve the diagnostic accuracy. Methods the clinical data and MRI findings of 17 patients with brain stem metastases confirmed by pathology and diagnosed as solitary brain stem metastases were analyzed retrospectively. The location, size, shape, structure and signal intensity of the tumors were analyzed. Degree of peritumoral edema and enhancement of tumor. Results there were 8 males and 9 females, aged 3969 years (mean 55.4 years). There were 14 cases of lung cancer, 1 case of breast cancer, 1 case of rectal cancer and 1 case of gallbladder carcinoma. The lesions were located in 10 cases of pontine, 3 cases of midbrain, 1 case of medulla oblongata, 2 cases of midbrain and pontine, 1 case of pontine and medulla oblongata. The maximum diameter of the tumor was 1 cm in 7 cases, 1 case in 1 case, 3 cm in diameter, 9 cases in 3 cm, 8 lesions in solid, 6 cases in cystic, 1 in simple cystic, 2 in cystic with wall nodule. The lesions showed circular enhancement in 9 cases, nodular enhancement in 5 cases, irregular enhancement in 2 cases, petaloid enhancement in 1 case in 5 cases without peritumoral edema, mild edema in 7 cases, moderate edema in 3 cases, and severe edema in 2 cases. Conclusion the conventional MRI findings of solitary brainstem metastases lack some characteristics. Combined with functional MRI and its clinical data, it is helpful to differentiate them from other lesions.
【作者单位】：广州医科大学附属武警广东总队医院放射科;广州医科大学;广州医科大学附属第二医院放射科;
【分类号】：R739.41;R445.2

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