Lateral Aspect Visualization of the Male Anterior Medial Liver Segment

Description

Anterior hepatic parenchyma is presented in lateral profile, centering on the anterior medial liver segment (Couinaud segment V) and its relationship to the adjacent left medial sector across the principal plane of the liver. The inferior margin and sharp anterior edge are emphasized, with segment V positioned inferior to the portal venous bifurcation and lateral to the gallbladder fossa, tapering superiorly toward the hepatic dome. Medially, the segment approaches the plane of the middle hepatic vein, while its lateral border grades into the right anterior sector along the course expected for the right hepatic vein. Segment V matters because it sits at the crossroads of hepatobiliary surgery and interventional radiology: laparoscopic cholecystectomy dissection occurs immediately inferior and medial to this parenchyma, where subvesical bile ducts in the gallbladder bed can be injured and cause postoperative bile leak. For hepatic resection planning, clear mental mapping of the segment V portal pedicle and venous drainage to the middle hepatic vein guides segmentectomy, wedge resection, or ablation while preserving inflow to the remaining right anterior segments. A deceptively small region with high procedural traffic. Use this illustration in hepatobiliary anatomy teaching (Couinaud segmentation and sector boundaries), operative atlases describing cholecystectomy and segment V resection margins, and radiology texts correlating CT or MRI segmental localization in the right lobe. It also fits patient-facing surgical consent materials when you need a clean lateral reference for where a lesion or ablation zone lies relative to the gallbladder bed. Anatomical accuracy verified by SciePro's Medical Advisory Board.