Objective To explore the value of CT and MRI in diagnosis of pheochromocytoma.
Methods Tweenty-five cases of pheochromocytoma confirmed by operation owned both CT and MRI image materials.All cases were underwent multi-slice spiral CT and MRI.MRI included T1 weighted imaging, T2 weighted imaging, gradient-echo out of phase or gadolinium-diethylenetriamine pentaacetic acid enhanced T1 weighted imaging.Tri-phase enhancement spiral CT was performed in 20 patients.
Results Among all the 25 cases of pheochromocytoma, 23 occured in the adrenal gland, 1 occured beside the abdominal aorta, another beside the mediastinum muscle column.22 cases were benign, 3 cases were malignant.Multi-slice spiral CT and MRI images showed the shape of a oval like, lobulated and irregular edge, partially showed necrosis, cystic lesion and bleeding.CT post-treatment and MRI can clearly show the shape, internal structure, adjacent relationship and partial tissue composition of tumors.
Conclusion Multi-slice spiral CT and MRI can improve the diagnostic accuracy rate of pheochromosytoma.
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