[Imaging of primary hepatic pheochromocytoma]

Extra-adrenal pheochromocytoma are extremely uncommon tumors. They demonstrate abdominal (97% of the cases), thoracic, vesical or cervical localizations. We report the case of a hepatic pheochromocytoma in a young patient with a post history of labile arterial hypertension. Ultrasonography, computed tomography and magnetic resonance imaging features were similar to those of adrenal pheochromocytoma. The presence of neuroendocrine cells was supported by immunohistochemical criteria. Histological observation showed a lack of local extension. In addition, four years after surgery, there was no apparent clinical syndrome suggesting tumor recurrence or metastasis occurrence. These observations supports the diagnosis of non malignant, primary hepatic pheochromocytoma. To our knowledge, this is the first radiologic description of this kind of tumor.