Ishii K, Yoshida Y, Matsui R, Shimizu M, Kono M, Harada Y, Tanaka Y, Ushio K
Department of Radiology, National Himeji Hospital.
Rinsho Hoshasen. 1990 Sep;35(9):1021-6.
MRI features of 8 patients were reviewed and correlated with pathological findings. It was characteristic finding that the intensity of pheochromocytoma on T2-weighted image and proton image was very high. The detectability of pheochromocytoma by MRI and CT was almost equal and MRI was also useful for determining aberrant pheochromocytoma. MRI was more helpful for detection of necrotic lesion than CT. We considered that the double ring sign on MRI was characteristic for pheochromocytoma. In the cases which are difficult for diagnosis, other diagnostic studies such as endocrine and other imaging studies are necessary.
回顾了8例患者的MRI特征，并与病理结果进行了对比。嗜铬细胞瘤在T2加权像和质子像上信号强度非常高是其特征性表现。MRI和CT对嗜铬细胞瘤的检出率几乎相同，MRI对确定异位嗜铬细胞瘤也很有用。MRI在检测坏死病灶方面比CT更有帮助。我们认为MRI上的双环征是嗜铬细胞瘤的特征性表现。在诊断困难的病例中，需要进行其他诊断性检查，如内分泌检查和其他影像学检查。
