Specific Medial Perspective on the Stomach's Posterior Wall

Description

Medial exposure of the stomach emphasizes the posterior wall of the gaster (ventriculus) as it forms the deep surface of the abdominal pouch between the gastroesophageal junction superiorly and the pyloric canal inferiorly. Along the lesser curvature on the medial side, the angular incisure typically marks the transition between the body and pyloric part, while the fundus arches superior and lateral to the cardia. Posteriorly, the gastric wall lies anterior to the lesser sac (omental bursa) and relates closely to the structures of the stomach bed, including the pancreas and splenic vessels toward the left. Orientation of the posterior gastric surface matters because it frames common pathways of disease spread and operative access. Posterior penetrating gastric ulcers can erode into the pancreas and produce referred back pain, and hemorrhage may follow involvement of arteries along the curvatures, most classically branches of the splenic artery near the fundus and body. For surgeons, this medial perspective aligns with what is encountered when entering the lesser sac by dividing the gastrocolic ligament or when mobilizing the lesser curvature during antrectomy and subtotal gastrectomy. A clear map of this surface reduces confusion between anterior and posterior lesions during endoscopy correlation and operative planning. It matters. Use this artwork in gross anatomy and GI blocks to teach peritoneal spaces (lesser sac versus greater sac), curvature landmarks, and the proximal to distal organization from cardia to pylorus. The view also suits surgical education materials on ulcer complications, posterior gastric perforation, and approaches that require access to the posterior wall for hemostasis or resection margins. Anatomical accuracy verified by SciePro's Medical Advisory Board.