摘要
目的:探讨CT和MRI对肾上腺意外瘤的诊断及鉴别诊断价值。方法:回顾性分析病理证实的28例肾上腺意外瘤的CT资料和其中21例MRI资料,观察其CT和MRI影像学表现,探索诊断和鉴别诊断要点。结果:囊肿6例,类圆形或椭圆形,边缘清晰光滑,密度或信号均匀,无强化,CT、MRI均确诊。髓质脂肪瘤8例,含有脂肪密度或信号为其特征性的CT、MRI表现而确诊。无功能皮质腺瘤9例,椭圆形或类圆形,边界清晰;密度或信号尚均匀,略强化。嗜铬细胞瘤1例,椭圆形,边界清,信号不均匀。神经纤维瘤1例,类圆形结节,边界清晰,密度或信号不均匀,中央大片坏死区,实性部分强化。转移瘤3例,1例瘤体较小者呈圆形或椭圆形,边缘欠规整,密度或信号均匀;2例瘤体较大,形态不规则,内见坏死,密度或信号不均匀,呈中等边缘强化。结论:CT、MRI对肾上腺意外瘤具有重要的诊断价值,有利于肿瘤定性和定位。但对于单侧较小的转移瘤和皮质腺瘤较难鉴别,确诊仍需结合临床及组织学检查。
Objective：To analyze the characteristic of adrenal incidentaloma on CT and MRI.Methods：In total,there were 28 cases of adrenal incidentaloma,of which 28 cases were examined with CT and 21cases with MRI in this work.All cases were confirmed by pathology.Their CT and MRI data were analyzed.Results：6 cases of adrenal cyst presented with round or oval shape,smooth and clear edge,homogeneous density or signal and with non-enhancement.CT and MRI diagnosis was correct.8 cases of myelolimpoma were confirmed by containing fat density or signal on CT and MRI.9 cases of cortical adenoma appeared oval or like-round shape,clear boundaries,homogeneous density or signal with slightly enhancement.One case of pheochromocytoma showed oval-shaped,clear bound,inhomogeneous signal with significantly contrast enhance.One case of neurofibroma was like-round node,clear bounder,uneven density or signal,central big peace necrosis area and partly parenchymal enhanced.There were 3 cases of metastasis tumors,of which,1 case with small size was circular or oval-shaped,homogeneous density or signal.Whereas,the other 2 cases with large size were irregular shape,inhomogeneous density or signal with medium enhanced edge.Conclusion：CT and MRI have important value in diagnosing adrenal rare tumor.The characterization and location of the tumor could be demonstrated by CT and MRI.But it is still difficult to identify cortical adenoma from unilateral small metastasis tumor.The combination of clinical with histological examination is needed to make a definite diagnosis.
出处
《医学影像学杂志》
2009年第10期1306-1308,共3页
Journal of Medical Imaging
