Mr. Binh, a 73-year-old man, had been suffering from a swollen abdomen for two months. After examination, doctors discovered a rare and large tumor behind the peritoneum, putting pressure on several nerves. The tumor, measuring 6×9 cm, was located in the retroperitoneal cavity, near important nerves and muscles. Due to its size and location, laparoscopic surgery was not feasible, so the team opted for open surgery for better control over blood loss and fewer complications.
During the surgery, the medical team carefully dissect
