Abstract
A 51-year-old woman was admitted to our hospital for the evaluation of a retroperitoneal solid tumor measuring 6 cm in size. The right-sided periadrenal tumor was incidentally identified on abdominal computed tomography performed during medical examination for another disease. The tumor was located on the dorsal aspect of the inferior vena cava and the right renal vein. Magnetic resonance imaging showed a well-defined tumor boundary that separated it from the right adrenal gland. Serum levels of cancer antigens (CEA and CA 19-9) and all 3 fractions of blood catecholamines were within reference range. Endoscopic ultrasound-guided fine-needle aspiration was performed, and the tumor was diagnosed as a retroperitoneal schwannoma. Based on the aforementioned findings, we performed 5-port laparoscopic surgery. We carefully dissected the soft adhesions between the tumor and the inferior vena cava and performed lysis of the strong fibrotic adhesions between the tumor and the right border of the vertebral body. Subsequently, we resected the tumor, including the adjacent portion of the right adrenal gland. The operation time was 256 min, and the estimated intraoperative blood loss was 250 g. No postoperative complications occurred, and the patient was discharged 7 days postoperatively.
