Detailed Anatomical Depiction of the Epigastric Fossa

Description

Centered on the infrasternal notch and subxiphoid region, the epigastric fossa is defined superiorly by the xiphoid process and xiphisternal junction and laterally by the converging costal margins formed by ribs 7 to 10. In this female profile view, the anterior abdominal wall contour highlights the midline linea alba with the rectus abdominis bellies lying just lateral, while the external oblique and its aponeurosis sweep inferomedially toward the rectus sheath. Deep to this surface landmark, the left lobe of the liver and the proximal stomach sit posterior to the abdominal wall, separated by the diaphragm at the infrasternal angle. Clinically, the subxiphoid area is more than a named depression. Palpation here helps localize epigastric pain patterns seen with peptic ulcer disease, gastritis, and pancreatitis, and it is also where gastric distension can be appreciated in thin patients. The same landmark guides procedures: the subxiphoid approach for pericardiocentesis aims the needle cephalad and posterior toward the left shoulder to avoid the internal thoracic vessels, while laparoscopic surgeons often reference the xiphoid and costal margin for safe port placement and to anticipate the falciform ligament and left hepatic edge. Surface anatomy matters. Use this illustration in gross anatomy and clinical skills courses to teach the infrasternal angle, costal margin, and epigastric fossa as palpation landmarks, and in medical publishing to support chapters on abdominal examination, referred pain, and anterior abdominal wall incisions. It also fits patient-facing materials explaining upper abdominal symptoms and the location of “pit of the stomach” discomfort. Anatomical accuracy verified by SciePro's Medical Advisory Board.