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How common is replaced right hepatic 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.

What does replaced right 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 most common hepatic artery variant?

Type III
In the literature, the most frequently encountered variation is Type III, present in between 6% and 15.5% of all cases [12, 13]. The second most frequent variation, Type II, was reported in 2.5–10% of all cases [13, 14]. In our study too, Types III and II were the most commonly seen hepatic arterial variations.

What percentage of people have an accessory or replaced left hepatic artery arising from the left gastric artery?

Both a replaced RHA and a left one were found in 0.8% of cases, while an accessory LHA and an accessory RHA were present in 3.2% and 1.6% of cases, respectively….Distribution of the Found Variants.

Michels type N = 19,013 100%
III 710 3.7
IV 163 0.8
V 592 3.2
VI 309 1.6

What does the right hepatic artery supply?

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.

What does the proper hepatic artery supply?

The proper hepatic artery that supplies the liver is a continuation of the common hepatic artery, a branch of the celiac trunk. The proper hepatic artery branches into the right and left hepatic arteries, which supply the corresponding lobes of the liver.

What is the common 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.

Where does hepatic portal vein drain to?

The portal vein (PV) is the main vessel of the PVS, resulting from the confluence of the splenic and superior mesenteric veins, and drains directly into the liver, contributing to approximately 75% of its blood flow [1]. Hepatic artery provides the remaining hepatic blood flow.

What is the function of hepatic artery?

Where is the proper hepatic artery?

Gross anatomy The hepatic artery proper runs anteromedial to the portal vein and medial to the common bile duct to form the portal triad within the hepatoduodenal ligament 1. It terminates by bifurcating into the right and left hepatic arteries before entering the porta hepatis of the liver.

When does the common hepatic artery become the proper hepatic artery?

The proper hepatic artery is the continuation of the common hepatic artery after it gives rise to the gastroduodenal artery. It courses anteromedial to the portal vein and medial to the common bile duct.

What organ does the common hepatic artery supply?

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.