is esophagus retroperitoneal
These include the kidneys, adrenals, and pancreas. Primarily retroperitoneal: 1  urinary. 2  adrenal glands. 3  kidneys. 4  digestive. 5  esophagus (partially). 6  small intestine (partially; for example duedonum with the exception of its first part). 7  ascending colon and descending colon. 8  rectum (part, lower third is extraperitoneal).o, the spleen is not retroperitoneal because it is inside the peritoneum. The peritoneum is the sac that holds most of our major organs in the abdomen. The kidneys are retrop â¦ eritoneal.