Leiyomyosarcoma of the inferior vena cava with right renal invasion: about a case report

Background Leiomyosarcoma of the inferior vena cava (IVC) is a rare tumor that develops from the wall of the IVC and can be confused with many other retroperitoneal tumors. We report the observation of a man with leiomyosarcoma of the vena cava which invades the right kidney. Case presentation 56-year-old man who has seen progress for right back pain for over a year. His thoraco-abdominal-pelvic scanner found a right tumor process measuring 18 × 13 × 18 cm invading the right kidney and the inferior vena cava, heterogeneous in nature, which is enhanced after injection of iodinated contrast product, pushing back the liver and the gall bladder. A border of separation persisted between the mass and the abdominal and thoracic walls. His biological assessment was normal. He underwent an open right nephrectomy with intraoperative bleeding requiring a transfusion of 2 red blood cells. The patient's follow-up period was 8 months without local recurrence or secondary localization. Conclusion The LMS of IVC is a tumor whose management is not yet well codified. Surgery is the only therapeutic means that gives good results, when it is possible. But long-term recurrences remain frequent, which therefore requires prolonged monitoring of these patients.