Metastasis of Pheochromocytoma to Lumbar Vertebra: Report of a Rare Case

Pheochromocytoma is a rare neoplasm with increased production of catecholamines and high blood pressure. These tumors are in chromatin cells group. 10% of these tumors are out of Adrenal gland and have negative for chromatin and are named Paraganglioma. Less of 10% of these tumors are malignant and metastasis is the only reliable indicator of malignancy. (Metastasis to lymph node, ¬liver - lung and bone) Our patient was a 34-years-old man with high blood pressure and unilateral nephrectomy that visit us for Lower Back Pain (LBP) with radicular pain in the right foot. After MRI in L4 and L5 one hyposignal lesion was considered and in biopsy under CT scan guide from vertebra (pheochromocytoma out of Adrenal gland) Paraganglioma was reported. So in LBP with regional metastatic lesion and high blood pressure we must also consider pheochromocytoma in differential diagnosis.