Objective:To evaluate the CT and MRI features of adrenal ganglioneuroma.Methods: CT and MRI images of 16 cases pathologically confirmed adrenal ganglioneuroma were collected.All images were retrospectively analyzed and compared with histopathological results.All the patients received CT plain and dynamic scan,and 5 had additional MR plain and dynamic scans.Results: The mean age of the patients was 26.4 years(range,18-54 years;10 male).10 lesions arised in the right adrenal gland and 6 in the left.The tumor size ranged from 3.6to 6.7 cm(mean 4.9 cm).on CT plain scan,all tumors manifested well-defined Homogeneous low-density mass.Punctate calcification was found in 9 tumors.5 tumors that received MR examinations presented a hypointense on T1WI and hyperintense on T2WI.On dynamic contrast images of CT or MRI,all tumors had gradual and slight enhancement from Arterial phase to delayed phase.7 lesions surrounded the vessels that had not been compressed or invaded.Conclusion: Adrenal ganglioneuroma is a rare benign tumor and has some specific imaging features,such as a well-defined lowdensity mass,a few Punctate calcification,Homogeneous high signal-intensity on T2W1 and a typical low-enhancement on delayed phase.According to these features,adrenal ganglioneuroma could be differentiated with other adrenal tumors.