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Stomach (Relations, Neurovasculature & Innervation), Posterior…

- - - - Left crus of diaphragm (pilier gauche)
        
        Pleuro-costo-diaphragmatic recess
        
        Base of the left lung
    - - Body and tail of pancreas
        
        Gastric surface of the spleen
        
        Superior pole of left kidney + left adrenal gland
        
        Duodenojejunal flexure
        
        Transverse mesocolon & transverse colon (further left)
  - - - Inferior surface of the left liver lobe
    - - Direct relation to the xiphoid/epigastric abdominal wall
    - - Separates stomach from left pleura, left lung, and thoracic cage
  - - - Lesser omentum
    - - Left colic flexure (splenic flexure), anterior border of spleen, and phrenicocolic ligament
- - - - Hepatic vagal branches innervating the pylorus and superior duodenum
    - - Formed by vagal terminal plexuses:
        
        Posterior Vagus (Right X)
        
        4–6 branches to posterior gastric wall
        
        key branch = Principal Posterior Nerve of the Lesser Curvature (Nerve of Latarjet)
        
        Anterior Vagus (Left X)
        
        4–6 branches to anterior gastric wall
        
        key branch = Principal Anterior Nerve of the Lesser Curvature
    - - Sympathetic filaments traveling alongside the Right Gastro-Epiploic Artery
- - - - Runs within the two layers of the greater omentum at a short distance from the gastric wall
        
        Anastomosis Between :
        
        Left Gastro-epiploic Artery
        
        Branch of the Splenic Artery
        
        Right Gastro-epiploic Artery
        
        Inferior terminal branch of the Gastroduodenal Artery
    - - Irrigates the fundus and cardia via scattered branches :
        
        Anterior branches
        
        From left gastric artery
    - - Runs within the two layers of the lesser omentum directly on the gastric wall
        
        Anastomosis Between:
        
        Left Gastric Artery
        
        Direct branch of the Celiac Trunk
        
        Right Gastric Artery
        
        Branch of the Proper Hepatic Artery
  - - - Lesser Curvature: Right/Left Gastric V. → Portal Vein
        
        Greater Curvature:
        
        Left Gastro-epiploic V. → Splenic V.
        
        Right Gastro-epiploic V.
        → Superior Mesenteric V.
    - - Left Gastric Chain
        
        Medial 2/3 of upper stomach
      - Splenic Chain
        
        Lateral 1/3 of upper stomach
      - Hepatic Chain
        
        Antropyloric region → Celiac Group