Validation of European evidence-based guidelines and American College of Gastroenterology Guidelines as Predictors of Advanced Neoplasia in Patients with Suspected Mucinous Pancreatic Cystic Neoplasms.

BACKGROUND AND OBJECTIVES: The European evidence-based guidelines (EEG) and American College of Gastroenterology Guidelines (ACGG) have been published to guide the management of pancreatic cystic lesions. We aim to evaluate the value of both guidelines in predicting advanced PCLs (A-PCLs) with preoperatively imaging suspected cystic mucinous pancreatic neoplasms (cMNs).

METHODS: One hundred ninety-eight patients who underwent resections from 2013 to 2019 for suspected cMNs were retrospectively reviewed. Receiver operating characteristic (ROC) curves were calculated and compared to measure diagnostic value.

RESULTS: Sixty-two patients were diagnosed with A-PCLs pathologically. Cross imaging modalities had comparable diagnostic accuracy to endoscopic ultrasound (EUS) in type classification and A-PCLs prediction. ROC curve comparison analyses showed that EEG absolute + MCN (EEGAM ) and EEG relative+ MCN (EEGRM ) having at least 1 indications criteria were comparable to the ACGG (P =0.21 and P=0.45). For the criteria having at least two indications, ACGG was superior to EEGAM (P=0.001) but comparable to EEGRM (P=0.12). EEGAM ≥1 indication criteria was superior to ≥2 indications criteria (P=0.02). EEGRM ≥1 indication criteria had comparable diagnostic performance with ≥2 indications criteria (P=0.86). ACGG ≥2 indications criteria was superior to ≥1 indication criteria (P=0.02).

CONCLUSION: On the basis of cross imaging evaluations, both sets of guidelines were found to be helpful in identifying A-PCLs in suspected cMNs with comparable performance. EEGAM ≥1 indication criteria was superior to ≥2 indications criteria. ACGG ≥2 indications criteria was superior to ≥1 indication criteria.