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A receiver operator characteristic (ROC) curve of fluid CEA or CA 19-9 with respect to diagnosing malignant/premalignant pancreatic cystic neoplasms. A: CEA > 3.1 ng/mL had a 70% sensitivity and 85% specificity; B: CA 19-9 > 37 U/mL had a 75% sensitivity and 90% specificity.
