Overall the most important and relevant relations of the liver are to the diaphragm and mesentery.
relations of the liver superior
The inferior surface of the liver tends to be flat, but there are undulations caused by moulding of the liver to the abdominal organs which relate to its inferior surface.
(from right to left)
colon (hepatic flexure)
right kidney and Morrison’s pouch
The stomach and the esophagus form grooves on the inferior surface of the liver.
The hepatic flexure lies inferior to the right lobe of the liver and usually forms an impression on its inferolateral surface. The right kidney with its perinephric fat is an inferior and posterior relation to the liver and generally leaves its mark on the liver as well. The lesser curvature of the stomach lies inferiorly and somewhat medially to the right and left lobes of the liver.
The muscles of the anterior abdominal wall consists of the rectus abdominis, external oblique, and internal oblique.
properitoneal fat line
The properitoneal fat line lies lateral to the liver.