Retroperitoneally
Retroperitoneally refers to the anatomical space located behind the peritoneum in the abdominal cavity. This area contains various structures such as the kidneys, adrenal glands, pancreas, and parts of the intestines. Organs in the retroperitoneal space are typically situated between the posterior abdominal wall and the peritoneum, which is a membrane that lines the abdominal cavity. Surgical procedures involving retroperitoneal structures require special considerations due to their unique location and proximity to important blood vessels and nerves.