肾上腺皮质癌的CT和MRI评价

CT and MRI evaluation of adrenal cortical carcinoma

为了评价ＣＴ和ＭＲＩ对肾上腺皮质癌的诊断价值，对１６例肾上腺皮质癌患者的ＣＴ和ＭＲＩ资料进行分析。结果显示：原发性肾上腺皮质癌ＣＴ扫描呈密度不均匀、不均一强化、体积较大的软组织肿块影像；ＭＲＩＴ２ＷＩ的肿瘤信号强度类似于脂肪，信号不均匀。术后肿瘤复发和术后纤维化的ＣＴ表现相似，前者ＭＲＩＴ２ＷＩ呈高信号，后者呈低信号。认为ＣＴ和ＭＲＩ对肾上腺皮质癌的诊断和术前分期有重要作用，对术后复发和术后纤维化的鉴别ＭＲＩ优于ＣＴ。

CT and MRI informations of adrenal cortical carcinoma were analyzed in 16 cases. The typical CT apperance of the primary adrenal cortical carcinoma was a large soft tissue mass with heterogeneous attenuation and inhomogeneous enhancement,the signal intensity of the tumors being similar to that of fat with heterogeneous appearance on MRI T2WI.The CT features of tumor recurrence were similar to those of postoperative fibrosis,but tumor recurrence showed high signal intensity while postoperative fibrosis exhibited low signal intensity in MRI T2WI. It was considered that both CT and MRI played an important role in the diagnosis and staging of adrenal cortical carcinoma,MRI being superior to CT in distinguishing tumor recurrence from postoperative fibrosis.