retropéritoneale

Retropéritonéale describes the anatomical space located behind the peritoneum, the serous membrane lining the abdominal cavity. This region is distinct from the intraperitoneal space, which is enclosed by the peritoneum. Organs situated in the retropéritonéale space are considered retroperitoneal.

Major structures found within the retroperitoneum include the kidneys, adrenal glands, pancreas, duodenum (except for its first portion), ascending and descending colon, aorta, inferior vena cava, and the ureters. The space is further divided into the anterior and posterior pararenal spaces, and the perirenal space which surrounds the kidneys. Blood vessels, nerves, and lymphatic vessels also traverse this region.

Pathologies affecting the retroperitoneum can range from infections and tumors to cysts and vascular abnormalities. Conditions such as retroperitoneal fibrosis, which involves the excessive growth of fibrous tissue, can compress vital structures and lead to significant symptoms. Tumors arising from or metastasizing to the retroperitoneum can be challenging to treat due to the deep location and the proximity of critical organs. Imaging techniques like CT scans and MRI are essential for diagnosing and evaluating retroperitoneal conditions.