Abstract

1. Abstract
1.1. Introduction: Paraganglioma is a rare extra-adrenal pheochromocytoma that arises from paraganglionic cells of the autonomic nervous system and can occur at various sites. Herein, we present a case of retroperitoneoscopic resection of a primary retroperitoneal paraganglioma between the aorta and vena cava.
1.2. Case presentation: A 67-year-old man presented with lower limb weakness, palpitations, and insomnia. His urinary total metanephrine and normetanephrine levels were high. Computed tomography showed a 48×34-mm oval mass on the dorsal side of the pancreas and portal vein between the aorta and vena cava. Because of the tumor location, we performed laparoscopic surgery using a retroperitoneal approach.