anatomy of the liver and diagnostic modalities

Question 1

explain the arterial supply from the main artery to the branches

Answer 1

celiac trunk -> common hepatic artery -> hepatic artery proper and gastroduodenal arteries.

hepatic artery proper -> left and right hepatic arteries

Question 2

venous drainage of the liver?

Answer 2

left, right, and middle hepatic veins drain into IVC

oxygen supply of the liver= half from the right and left hepatic arteries half from the portal vein
blood supply of the liver= 75% from the portal vein, the rest from the arteries

Question 3

the ligaments of the liver?

Answer 3

coronary ligament connects the liver into the diaphragm
falciform ligament connects it into the anterior abdominal wall & contains ligament teres (obliterated umbilical vein)

bare area= posterior section of the liver against the diaphragm not covered by peritoneum

Question 4

explain briefly HIDA scan

Answer 4

patient’s RBCs are tagged with technetium 99 then injected into the blood. Check the uptake into the liver, gallbladder, and duodenum.
absent uptake is abnormal.
most sensitive for acute cholecystitis but its time consuming

Question 5

explain briefly ERCP

Answer 5

endoscopic retrograde cholangiopancreatography.

endoscope is used into the duodenum, catheter is inserted into the ampulla of vater and contrast is injected into CBD or pancreatic duct.

can be used to obtain biopsy from gallbladder of pancreas for cancer OR as therapeutic to remove stones.
COMPLICATION IS PANCREATITIS (complication and indication)