Regional or Extend LymphAdenectomy During Resection of Intrahepatic Cholangiocarcinoma

This study is comparing two types of lymph node removal during surgery for intrahepatic cholangiocarcinoma — a type of liver cancer arising from bile duct cells inside the liver. Researchers want to find out whether removing more lymph nodes (extended lymphadenectomy) improves survival compared to removing only the nearby regional nodes. **You may be eligible if...** - You are between 18 and 80 years old - You have been diagnosed with intrahepatic cholangiocarcinoma confirmed by imaging and pathology - Your cancer is considered surgically removable before the operation - Your imaging does not show obvious lymph node spread, or intraoperative biopsy of lymph nodes is negative - You have adequate liver function and enough healthy liver tissue remaining after surgery (more than 30%) **You may NOT be eligible if...** - You have significant heart, lung, brain, or kidney conditions making surgery too risky - Your cancer is not resectable or has already spread beyond the liver - You have inadequate liver function or insufficient remaining liver volume Talk to your doctor to see if this trial is right for you.