Abstract
Pheochromocytomas are potentially malignant and may manifest with vascular thrombi. We present the treatment of a patient with pheochromocytoma and tumor thrombosis of the renal vein and inferior vena cava. A thirty-eight-year-old male patient was admitted complaining of abdominal pain and headache. High levels of urinary catecholamine were detected. Magnetic resonance imaging revealed left pheochromocytoma with thrombosis of the inferior vena cava and the left renal vein. A left adrenalectomy and a thrombectomy with cavotomy were performed. The pathology results reported a 9.5 cm malignant pheochromocytoma. The patient's symptoms dissipated after the operation and there were no signs of recurrence at the two-month follow-up. Preoperative radiological diagnostic examinations are valuable in the planning of pheochromocytoma surgery. We believe that adrenalectomy and thrombectomy can be performed on pheochromocytoma patients with vascular thrombi with low morbidity.