摘要
目的 :探讨肾上腺肿瘤的CT和MRI影像学特点。方法 :回顾分析经临床、手术病理证实的 4 0例肾上腺肿瘤的CT资料和其中 10例MRI资料 ,观察其CT和MRI征象 ,提出诊断和鉴别诊断要点。结果 :4 0例中 ,腺瘤 16例 ,其中Cushing腺瘤 8例 ,直径 2 .0～ 3.0cm的密度均匀的肿块 ,其信号与肝脏信号类似 ;Conn腺瘤 6例 ,直径 1.0～ 2 .0cm的均一水样密度肿块 ;2例腺瘤无症状。皮质腺癌 7例 ,呈巨大不规则的不均匀密度或信号肿块。嗜铬细胞瘤 7例 ,较大的不均匀密度或信号肿块 ,实体部分明显强化。转移瘤 8例 ,双侧或单侧肿块 ,T2 WI明显高信号。髓性脂肪瘤 1例 ,不均质肿块内有显著的脂肪组织密度或信号。淋巴管囊肿 1例 ,不强化均一水样密度或信号的肿块。结论 :肾上腺肿瘤CT和MRI表现有一定的特征 ,结合临床及生化检查 ,能对其做出定性诊断。
Objective:To study CT and MRI imaging features of adrenal tumors.Methods:To review and analyze 40 cases of CT findings of adrenal tumors and 10 cases MRI signs among them verified by operation pathology and clinical diagnosis, and to provide keys to diagnosis and how to identify them by observing the sign of its CT and MRI.Results:Among the 40 cases, 16 cases of adenoma were seen, in which there are 8 cases of Cushing adenoma, presenting as 2.0～3.0cm mass of homogenous density, it's signal being similar to that of the liver on both T 1WI and T 2WI; 6 cases of Conn adenoma, presenting as 1.0～2.0cm mass of homogenous water density with slight enhancement; There are 2 cases of adenoma without symptom,adenocarcinoma (n=7) was the largest irregular mass of uneven density or signal. Pheochromocytoma (n=7) was larger mass of heterogeneous density or signal with marked enhancement, metastasis tumor (n=8),displaying as single or double side mass with obvious higher signal than that of liver on T 2WI.Myelolipoma (n=1) presented as uneven density or signal mass with large fat contents. Cystic lymphangioma (n=1) demonstrated homogeneous water density on signal without enhancement.Conclusion:Adrenal tumors have certain characteristic CT and MRI signs,a combination of CT and MRI findings with clinical and laboratory data can usually provide correct diagnosis.
出处
《医学影像学杂志》
2004年第6期467-469,共3页
Journal of Medical Imaging
