What is the anatomical origin of the replaced right hepatic artery?
Replaced right hepatic artery (RRHA) arising from the superior mesenteric artery (SMA) was detected in 159 cases (10.13 %). Each anatomical parameter of RRHA was subject to variation in the studied population.
What does replaced right hepatic artery mean?
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 a replaced common hepatic artery?
The replaced common hepatic artery (RCHA) is a rare anatomic variation involving a persistent embryonic artery in the absence of the common hepatic artery (CHA) originating from the celiac trunk [16].
How common are replaced right hepatic artery?
In 11–21% of patients, the right hepatic artery (RHA) can be replaced (taking a path other than the normal course) [3, 14].
Which aberrant vessels may arise from the SMA?
(4) An aberrant right hepatic artery has been described to arise from the inferior mesenteric artery (65). (5) An aberrant left hepatic artery has been described arising from the SMA (66).
What percentage of people have an accessory or replaced right hepatic artery arising from the superior mesenteric artery?
The common variations include a replaced or an accessory right HA originating from the superior mesenteric artery (6.67 %) and a replaced or an accessory left HA originating from the left gastric artery (6.41 %) [1]. Aberrant hepatic arterial anatomy is quite common in 41 % of the population [2].
What is an aberrant hepatic artery?
The aberrant left hepatic artery is an arterial branch off of the left gastric artery and courses through the gastrohepatic ligament that provides blood supply to the left lobe of the liver.
What is a accessory right hepatic artery?
Accessory right hepatic arteries arise from the superior mesenteric artery and run in the portacaval space to supply a portion of the right lobe of the liver. This abnormality is present in 1% to 7% of patients. Accessory and replaced right hepatic arteries rarely have side branches adequate for cannulation.
What is porcelain GB?
Porcelain gallbladder refers to the condition in which the inner gallbladder wall is encrusted with calcium. The wall becomes brittle, hard, and often takes on a bluish hue. Other names for this condition are calcified gallbladder, calcifying cholecystitis, and cholecystopathia chronica calcarea.
What percentage of people have an accessory or replaced left hepatic artery arising from the left gastric artery?
A replaced right hepatic artery (RHA) arose from the superior mesenteric artery (SMA) in 3.7% of cases, while a replaced left hepatic artery (LHA) stemmed from the left gastric artery in 3% of cases.
What does right hepatic artery supply?
The right hepatic artery arises from the hepatic artery proper, a branch of the common hepatic artery (from the celiac trunk). It supplies most of the right lobe of the liver as well as the middle part of the common bile duct.
Where is hepatic artery located?
The common hepatic artery is located in the abdomen, near the lower portion of the T12 vertebra. It’s one of three branches coming off the celiac trunk. The celiac trunk is a major artery and the first branch of the abdominal aorta. The other celiac trunk branches include the splenic artery and the left gastric artery.
What forms the cystohepatic triangle?
It lies in the cystohepatic triangle (of Calot), an anatomical space whose borders are formed by the cystic duct, the common hepatic duct and the inferior surface of the liver. Calot’s triangle is an important landmark used to locate and ligate the cystic artery during a cholecystectomy.
What are the two most common variants of hepatic artery replacement?
The two most common variants are: 1 replaced right hepatic artery arising from the SMA 2 replaced left hepatic artery arising from the left gastric artery More
What does the right hepatic artery arise from?
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.
What is the normal variant of hepatic artery anatomy?
Replaced right and left hepatic arteries: a variation in origin and course 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.
Is there an aberrant hepatic artery coursing retroportally in hepatobiliary procedures?
Preserving the hepatic blood supply is paramount in hepatobiliary procedures. We report an aberrant right hepatic artery coursing retroportally, with an aberrant left hepatic artery originating directly from the coeliac artery in a patient who underwent an elective pancreaticoduodenectomy (Whipple procedure).