Vessels of the Gut: Portosystemic anastomosis

Question 1

Portosystemic anastomosis at lower end of eosophagus & its clinical point

Answer 1

• tributaries Left gastric vein (portal)
• tributaries Azygous Vein (systemic)

during portal hypertension, opening of these anastomosis leads to eosophageal varices, which rupture causing haematemesis & melena

Question 2

Portosystemic anastomosis at lower end Rectum/ upper end anal canal & its clinical point

Answer 2

• Superior rectal vein (portal)
• Middle & inferior rectal vein (systemic)

portal hypertension may cause piles & bleeding per rectum

Question 3

Portosystemic anastomosis around umbilicus & its clinical point

Answer 3

• Paraumbilical Veins (portal)
• Sup. & inf. epigastric Veins (systemic)

Portal hypertension leads to dilations of these anastomosis called Caput Medusae