A hard lump felt in the abdomen of a patient with pancreatic cancer may be caused by cancer cells that have metastasized to other organs in the abdominal cavity and continue to grow causing enlargement of that organ or an enlarged gallbladder. In the advanced stage of pancreatic cancer, metastasis may occur, and the cancer cells metastasize to other organs in the abdominal cavity and continue to grow, resulting in enlargement of that organ, which can be felt as an abdominal mass outside the abdominal wall. In case of pancreatic head cancer, the enlarged pancreatic head presses the common bile duct, which makes the bile in the gallbladder to drain into the common bile duct poorly, then the gallbladder will be enlarged, and at this time, the enlarged gallbladder can be touched in the right upper abdomen. If you feel unwell, please go to the relevant department of the hospital where you are diagnosed, and do relevant examinations to clarify the location and nature of the abdominal hard lump.