The left upper quadrant (LUQ) is the left upper abdominal region, starting from the chest's middle line to the left side of the ribcage and down to the level of the navel (belly button).

Healthcare providers look for clues about the cause of your pain based on four quadrants in your abdomen, each containing organs that correspond to specific abdominal symptoms. Right upper quadrant ...

A person with an abdominal mass may notice weight gain and symptoms such as abdominal discomfort, pain, and bloating ... may occur in the right upper quadrant, left upper quadrant, right lower ...