Introduction: Ganglioneuroma is a rare, benign neurogenic tumor that develops from sympathetic ganglionic cells. It is mainly located in the retroperitoneal region. Observation: This is a 39-year-old patient with no pathological history who has been seen for right back pain. Abdominal CT showed a right adrenal tumor with diameters of 40mm×22.5mm, a spontaneous density of >10 HU before injection, and > 31.5 HU after injection with a wash-out at late time < 40%. The hormonal balance reversed the secreting character of the mass, surgical treatment was indicated, histological analysis came back in favor of adrenal ganglioneuroma. Conclusion: Although benign, the ganglioneuroma may present malignant aspects, including scanographic that can mislead the clinician. Therefore, histology remains the examination of choice to make the diagnosis.