少血供垂体转移瘤2例并文献复习  

Two Cases of Hypovascular Pituitary Metastases and Literature Review

作　　者：赵宁 王波涛 陈志晔 ZHAO Ning;WANG Botao;CHEN Zhiye(Department of Radiology,Hainan Hospital of Chinese PLA General Hospital,Sanya,Hainan 572013,China;The Second Clinical College of Southern Medical University,Guangzhou 510515,China)

机构地区：[1]中国人民解放军总医院海南医院放射科,海南三亚572013 [2]南方医科大学第二临床医学院,广州510515

出　　处：《中国医学科学院学报》2021年第4期663-668,共6页Acta Academiae Medicinae Sinicae

摘　　要：垂体转移瘤是一种少见的从全身各部位恶性肿瘤转移至垂体所致的颅内恶性肿瘤。常见垂体转移瘤为富血供,位于垂体后叶和/或垂体柄,病灶呈浸润生长,磁共振T1加权成像呈低信号,T2加权成像呈高信号,增强扫描多呈明显强化。而少血供垂体转移瘤在磁共振图像上与垂体大腺瘤相似,难以鉴别。现报道2例经病理确诊的少血供垂体转移瘤并复习相关文献,以期总结少血供垂体转移瘤的影像学鉴别要点。Pituitary metastasis,a rare kind of intracranial malignant tumor,is characterized by metastasis from all parts of the body to the pituitary.The common tumors metastatic to pituitary are abundant with blood supply,located in the posterior pituitary lobe and/or the pituitary stalk.The lesion shows infiltrative growth,and mainly demonstrates low signal on T1 weighted imaging and high signal on T2 weighted imaging.It is usually enhanced significantly after iodinated contrast administration.The metastatic tumor with poor blood supply is similar to pituitary macroadenoma on magnetic resonance image,which makes it difficult to be differentiated.We reported two cases of pathologically diagnosed pituitary metastasis with poor blood supply and reviewed related papers,aiming to provide the imaging differentiation points of hypovascular pituitary metastasis.

关 键 词：垂体 转移瘤 磁共振成像 放射诊断 

分 类 号：R455.2[医药卫生—运动医学]