;Anterior margin: listed from the top-to-bottom margin:
Caudate lobe of the
liver,
lesser omentum,
stomach,
gastrocolic ligament ;Lateral margin: listed from the most anterior to the most posterior margin:
Gastrosplenic ligament,
spleen,
Lienorenal ligament ;Posterior margin: Left
kidney and
adrenal gland,
pancreas ;Inferior margin:
Greater omentum ;Superior margin:
Liver If any of the marginal structures rupture their contents could leak into the lesser sac. If the stomach were to rupture on its anterior side though the leak would collect in the
greater sac. The lesser sac is formed during
embryogenesis from an infolding of the greater omentum. The open end of the infolding, known as the
omental foramen is usually close to the stomach. ==Additional images==