Some families have multiple members affected by pancreatic cancer. In fact, the American Cancer Society says that up to 10% of pancreatic cancers may be caused by inherited DNA changes. Studies are ongoing to see if aggressive screening with endoscopic ultrasound works for early detection of pancreatic cancer in healthy family members. Early results are promising. However, endoscopy is an invasive procedure, so it should only be used on people already at high risk for pancreatic cancer.