What does replaced hepatic artery mean?
Terminology. An accessory hepatic artery is one which arises from an anomalous origin and supplies a portion of the liver along with another artery. A replaced hepatic artery is one which arises from an anomalous origin and supplies a portion of the liver solely.
What is the anatomical origin of the replaced right hepatic artery?
The two most common variants are: replaced right hepatic artery arising from the SMA. replaced left hepatic artery arising from the left gastric artery.
How common is replaced right hepatic artery?
The right hepatic artery arises from the superior mesenteric artery (SMA), also referred to as “replaced to the SMA”, in 9 to 15% of the population. It is the most common variant in hepatic arterial anatomy.
Is there only one hepatic artery?
Variant anatomy Classic branching of the common hepatic artery from the celiac artery, and the proper hepatic artery into right and left hepatic arteries to supply the entire liver, is seen in only 55-60%. A single or double cystic artery may arise off the proper hepatic artery.
What are hepatic arteries?
The hepatic artery proper (also proper hepatic artery) is the artery that supplies the liver and gallbladder. It raises from the common hepatic artery, a branch of the celiac artery.
What is the function of hepatic artery?
Anatomical terminology The common hepatic artery is a short blood vessel that supplies oxygenated blood to the liver, pylorus of the stomach, duodenum, pancreas, and gallbladder.
What is a right hepatic artery?
The right hepatic artery is an end artery and contributes sole arterial supply to right lobe of the liver. Misinterpretation of normal anatomy and anatomical variations of the right hepatic artery contribute to the major intraoperative mishaps and complications in hepatobiliary surgery.
Are hepatic arteries paired?
Results: In the first case; at the end of the common hepatic artery, the left hepatic artery was branched out as a pair. It was observed that both left hepatic arteries supply the left lobe of the liver. The common hepatic artery continues as the right hepatic artery.
What supplies the hepatic artery?
The common hepatic artery is a short blood vessel that supplies oxygenated blood to the liver, pylorus of the stomach, duodenum, pancreas, and gallbladder….Common hepatic artery.
| Branch | Details |
|---|---|
| hepatic artery proper | supplies the gallbladder via the cystic artery and the liver via the left and right hepatic arteries |
What does the left and right hepatic artery supply?
Right hepatic artery (RHA) supplies the right lobe and the half of the caudate lobe of the liver. It also gives cystic artery, which supplies the gall bladder. Left hepatic artery (LHA) supplies the left lobe, quadrate lobe and the other half of the caudate lobe of the liver [2,3].
What does the hepatic artery come off of?
The common hepatic artery is a branch of the celiac trunk and courses anterior to the pancreas before giving off the gastroduodenal artery inferiorly, where it then becomes the hepatic artery proper, entering the hilum of the liver via the hepatoduodenal ligament.
Where does the replacement hepatic artery come from?
A replaced hepatic artery is one which arises from an anomalous origin and supplies a portion of the liver solely. In general, the common hepatic artery may arise from the abdominal aorta or superior mesenteric artery (SMA) and all or part of the right and left hepatic arteries may arise from (be replaced to) other vessels.
When did na Michels describe hepatic artery variants?
In 1955, NA Michels described his classification of hepatic artery variants and their frequency, which is commonly referenced today.
Is the hepatic artery of the normal variant?
In ∼60% of cases, hepatic artery anatomy is of the normal variant. However, in 40% of cases, anomalies can exist. Preserving the hepatic blood supply is paramount in hepatobiliary procedures.
Where does the MHA arise from in the hepatic?
it may arise from the right hepatic artery. it may arise as a trifurcation of the PHA in the porta hepatis. in patients with a replaced left hepatic artery, the MHA arises from the right hepatic artery. in patients with a replaced right hepatic artery, the MHA arises from the left hepatic artery.