What does 'Epigastric region' denote?

The term 'epigastric region' specifically refers to the upper central area of the abdomen, which is located just below the rib cage and above the umbilical region. This region encompasses vital organs such as the stomach, liver, and portions of the small intestine. Understanding this anatomical reference is crucial for medical professionals when assessing conditions or symptoms related to abdominal ailments, as it helps localize areas of discomfort or potential pathology.

The other options describe different anatomical regions: the area between the lowest ribs is not limited to the central aspect and can include the flanking areas, while the area around the navel refers to the umbilical region of the abdomen. The lower part of the thorax pertains to a distinct section above the abdomen, primarily housing the lungs and heart, not strictly the liver and digestive organs located in the epigastric region. Therefore, the definition of 'epigastric region' aligns best with the upper central area of the abdomen.