Cystic Artery, Posterior View

Description

Arising most often from the right hepatic artery, the cystic artery courses posterior to the common hepatic duct and cystic duct as it approaches the neck of the gallbladder. From a posterior perspective, its branches can be followed as they pierce the gallbladder wall and spread within the subserosal connective tissue before supplying the muscular layer and mucosa. The gallbladder fundus lies inferiorly, while the infundibulum (Hartmann pouch region) sits more superior and medial near the extrahepatic biliary confluence. Short venous channels draining toward the hepatic bed may accompany the arterial twigs. Small-caliber arterioles are visible. This posterior orientation matters in cholecystectomy, where safe control of the cystic artery depends on clear identification within Calot’s triangle (cystohepatic triangle) bounded by the cystic duct, common hepatic duct, and inferior surface of the liver. Posterior dissection is where anatomic variation declares itself: a double cystic artery, an anterior and posterior branch pattern, or an origin from the gastroduodenal artery can all place a vessel unexpectedly close to the common bile duct. Bleeding at this depth obscures the operative field fast, and aggressive clipping risks ductal injury or hepatic arterial damage. Surgical anatomy courses, hepatobiliary teaching files, and operative technique chapters benefit from this view when explaining the critical view of safety and common error traps during laparoscopic cholecystectomy. It also fits radiology and endoscopy education when correlating arterial supply with gallbladder ischemia after embolization or with inflammatory hyperemia in acute cholecystitis. Anatomical accuracy verified by SciePro's Medical Advisory Board.