A precancerous pancreatic cyst is a benign tumor that has the potential to progress to pancreatic cancer over an extended period. Most pancreatic cysts are found during abdominal scans for other issues. A benign pseudocyst, can be left alone as long as it isn’t bothering you, but you may have symptoms such as persistent abdominal pain, nausea, vomiting, and unexplained weight loss. If you have been diagnosed with a precancerous pancreatic cyst watch for fever and persistent abdominal pain as they could be signs that the cyst became infected. The cause of most pancreatic cysts is unknown. Some cysts are associated with rare illnesses, including polycystic kidney disease or von Hippel-Lindau disease and can also be caused by trauma to the abdomen.