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Anterosuperior surface of the liver mainly showed the presence of diaphragmatic sulci, which were multiple in number and variable in their length and depth. After reflecting the visceral surface of the left lobe of the liver, the supracolic compartment was properly visible. The abdominal cavity was carefully dissected and then supracolic compartment was meticulously exposed. The cadaver had no pathological lesions, traumatic lesions, or marks of any surgical procedures in the abdominal region. ĭuring routine dissection classes, conducted for first-year Undergraduate students, a rare uncommon peritoneal reflection from the gallbladder to the duodenum and transverse colon was observed in 55 years female cadaver in the department of Anatomy, All India Institute of Medical Sciences, New Delhi, India. These accessory ligaments sometimes may be the reason for internal rotation, which may result in pain and strangulation. Accessory peritoneal ligaments are more common in a supracolic compartment of the peritoneal cavity. Sometimes due to its location, it acts as a gateway to the entry of lesser sac. This ligament is a double-layered membranous structure. Usually, there is no peritoneal reflection between the gallbladder, duodenum, and transverse colon, but if present is termed as a cystoduodenocolic ligament. The peritoneal folds also form boundaries of various peritoneal spaces or recesses and become well delineated by fluid collection or abscess formation affecting the spaces. The peritoneal folds not only act as conduits for the passage of blood vessels and lymphatic's from the retroperitoneum to reach intraperitoneal organs but also provide a pathway for the spread of disease processes and sometimes limiting space for the spread of diseases. Some of these ligaments enclose blood vessels and lymph nodes while others are avascular and just a connecting link between adjacent organs. The layers of peritoneum covering the surface of the liver is termed as ligament, layers enclosing small intestine termed as mesentery and similarly, the layers-enclosing colon is termed as mesocolon. Due to further development of various viscera, peritoneum gains complexity. Embryological origin of the peritoneum is from the lower portion of pericardioperitoneal canals and two layers of lateral plate mesoderm (somatopleuric and splanchnopleuric layers) associated with the gut. parietal layer covering the body wall and visceral layer covering abdominal viscera. This process results in the formation of two layers of peritoneum i.e. Developmentally all the abdominal viscera will project into the cavity of peritoneum and take the layer of peritoneum along with them. The peritoneum constitutes largest serous cavity in the body.