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作 者:张旭妃[1] 王丽宁[1] 高洁 胡建新 梁晨阳 朱明旺[1] ZHANG Xufei;WANG Lining;GAO Jie;HU Jianxin;LIANG Chenyang;ZHU Mingwang(Department of Imaging,Beijing Sanbo Brain Hospital,Capital Medical University,Beijing 100093,China)
机构地区:[1]首都医科大学三博脑科医院影像科,北京100093
出 处:《实用放射学杂志》2024年第3期352-355,共4页Journal of Practical Radiology
摘 要:目的探讨松果体区乳头状肿瘤(PTPR)的影像学特点.方法回顾性分析10例经手术病理证实的PTPR患者影像资料.结果所有病变均位于三脑室后下壁的后连合区域.MRI上病变均呈不均匀长T1WI长T2WI信号,肿瘤内部可见多发小囊或微囊信号影,其中9例病变内部或边缘可见T1WI高信号影.所有病变均表现为扩散受限.增强后病变均表现为不均匀明显强化.5例中脑顶盖受压后移,2例下移,1例前下移,另2例顶盖显示不清.1例种植播散.1例高灌注.10例均伴有梗阻性脑积水.CT上所有病例均表现为等或略高密度影,其中4例病变内可见钙化.结论PTPR的影像学有一定的特征,以后连合为中心生长,常推挤压迫中脑顶盖后下移位,肿瘤内部常可见多发小囊或微囊成分,以及T1WI高信号,增强后不均匀明显强化.Objective To investigate the imaging features of papillary tumor of the pineal region(PTPR).Methods The ima-ging data of 10 patients with PTPR confirmed by operation and pathology were analyzed retrospectively.Results All lesions were located in the posterior commissure area of the posterior inferior wall of the third ventricle.All lesions were heterogeneously hyper-intensity on T1WI and hyperintensity on T2WI.Multiple small cysts or microcapsules signal intensity were observed within the tumor.Of all 10 lesions,there were 9 lesions with high signal intensity within or at the edge of the lesion on T1WI.All lesions showed restricted diffusion.All 10 cases showed uneven and obvious enhancement patterns.Midbrain tectum was compressed and moved backward in 5 cases,moved downward in 2 cases,moved forward and downward in 1 case,and was not clearly displayed in other 2 cases.One case was disseminated and 1 case was hyperperfusion.There were all 10 cases with obstructive hydrocephalus and equal or slightly high density on CT imaging,and 4 cases with calcification.Conclusion Imaging characteristics of PTPR included the lesions centered on the posterior commissure,compressed tectum with backward and downward,multiple small cysts or micro-capsules components within the tumor,hyperintensity on T1WI,and uneven and obvious enhancement patterns.
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