Liver surgery comprises various operations of the liver for different disorders. The most common operation performed on the liver is a resection (removal of a portion of the liver). The most typical indication for liver resection is a malignant tumor. Tumors can be primary (developed in the liver) or metastatic (developed in another organ, then migrated to the liver). The majority of liver metastases come from the colon. The single tumor or more than one tumor confined to either left or right side of the liver can be successfully resected with 5-year survival as high as 60%. 

Benign tumors of the liver (cyst, adenoma, hemangioma) can be successfully managed by liver resection as well.