Surgery Type | Segments Removed (Couinaud) | Purpose / When Used | Key Considerations |
Right Hepatectomy | V, VI, VII, VIII | Tumours mainly in the right hemiliver | Standard major resection; good regeneration if remnant adequate |
Left Hepatectomy | II, III, IV | Tumours mainly in the left hemiliver | Generally lower risk than right-sided major resections |
Extended Right Hepatectomy | IV, V, VI, VII, VIII | Large/multiple tumours in the right + segment IV | More extensive; often needs pre-op embolisation; higher risk |
Extended Left Hepatectomy | II, III, IV, V, VIII (± I) | Extensive left-dominant or central tumors | Complex; major vascular involvement; used in specialised cases |
Left Lateral Sectionectomy (Bisegmentectomy 2,3) | II, III | Small/peripheral tumours in the left lateral section | Minor procedure; often minimally invasive; quick recovery |
Segmentectomy (Anatomical) | One or more specific segments | Targeted tumour in specific segment(s); good for cirrhosis/multifocal | Maximises healthy tissue preservation; ideal for limited function |
Non-anatomical Resection (Wedge) | Does not remove any complete functional Couinaud segments | Small/superficial/peripheral tumours | Minimises tissue loss; faster/safer in poor liver function |