The first part of the duodenum is an intraperitoneal organ. Other intraperitoneal organs include:
Stomach, Spleen, Liver, Jejunum, Ileum, Transverse colon, Sigmoid colon.
Peritoneal metastases are cancers that have spread to the peritoneum from other organs. In most cases, this is considered advanced and is Stage IV disease.
The greater omentum originates from the dorsal mesogastrium during embryonic gastric rotation. The dorsal mesogastrium is the site of development of major parts of the pancreas.
The infracolic compartment is located below the transverse mesocolon in the abdominal cavity. It contains the ascending and descending colon, as well as the small intestine. The mesentery of the small intestine divides the infracolic compartment into left and right infracolic spaces.
The left infracolic compartment is bordered by:
The transverse mesocolon superiorly
The descending colon's medial wall laterally
The sigmoid mesocolon's superior part inferolaterally
The medial part of the root of the small intestinal mesentery medially
The right infracolic space is limited by the following:
Cecum, Ascending colon, Mesoappendix, Small bowel mesentery, Transverse
