Simon John McPherson1,2, Derek A O'Reilly2,3, Martin T Sinclair2,4, Neil Smith2. 1. 1 Department of Radiology, Consultant Vascular and Interventional Radiologist, Leeds Teaching Hospitals NHS Trust , Leeds , UK. 2. 2 NCEPOD [National Confidential Enquiry into Patient Outcome and Death] , London , UK. 3. 3 Central Manchester University Hospitals NHS Foundation Trust , Manchester , UK. 4. 4 The Ipswich Hospital NHS Trust , Ipswich , UK.
Abstract
OBJECTIVE: To assess use of imaging in patients admitted to UK hospitals with acute pancreatitis (AP). METHODS: 4,479 patients had a diagnosis AP in the first 6 months of 2014. The National Confidential Enquiry into Patient Outcome and Death (NCEPOD) selected patients with more severe AP for case review. Clinicians completed 712 questionnaires and case reviewers assessed 418 cases. The use of imaging in patients with AP is reported. RESULTS: The common causes of AP were gallstones (46.5%) and alcohol excess (22%) with no cause identified in 17.5%. Imaging was needed to diagnose AP in 12%. 60.1% of patients had one or more CT scan. The timing of the CT scan(s) was appropriate in 90% of patients. The number of CTs was appropriate in all except 6.6% (equally split between too many and too few). AP collection intervention was radiological in 49/613 and surgical in 23/613. 69.8% had an ultrasound scan which diagnosed gallstones in 46.4% and bile duct dilatation in 12.9%. At least 21% had ultrasound scan inappropriately omitted. The National Confidential Enquiry into Patient Outcome and Death recommends gallstones are excluded in all patients with AP, including suspected alcohol-related AP. 29.8% underwent magnetic resonance cholangio--pancreatography diagnosing gallstones in 62.4%, bile duct dilatation in 25.4% and common bile duct stones in 14.4%. 20.6% had recurrent pancreatitis with gallstones accounting for a third. 17% with gallstone AP had a cholecystectomy within the guideline recommended time period. CONCLUSION: Imaging is rarely required for the diagnosis of AP. CT is used responsibly in AP management. Imaging should be used more to exclude gallstones, including in presumed alcohol related AP. Increased diagnostic efforts will not reduce recurrent biliary AP unless matched by earlier gallstone treatment. Advances in knowledge: Whilst CT is used responsibly in AP greater use of other diagnostic modalities is required to identify reversible causes, in particular gallstones, in order to prevent recurrent AP.
OBJECTIVE: To assess use of imaging in patients admitted to UK hospitals with acute pancreatitis (AP). METHODS: 4,479 patients had a diagnosis AP in the first 6 months of 2014. The National Confidential Enquiry into Patient Outcome and Death (NCEPOD) selected patients with more severe AP for case review. Clinicians completed 712 questionnaires and case reviewers assessed 418 cases. The use of imaging in patients with AP is reported. RESULTS: The common causes of AP were gallstones (46.5%) and alcohol excess (22%) with no cause identified in 17.5%. Imaging was needed to diagnose AP in 12%. 60.1% of patients had one or more CT scan. The timing of the CT scan(s) was appropriate in 90% of patients. The number of CTs was appropriate in all except 6.6% (equally split between too many and too few). AP collection intervention was radiological in 49/613 and surgical in 23/613. 69.8% had an ultrasound scan which diagnosed gallstones in 46.4% and bile duct dilatation in 12.9%. At least 21% had ultrasound scan inappropriately omitted. The National Confidential Enquiry into Patient Outcome and Death recommends gallstones are excluded in all patients with AP, including suspected alcohol-related AP. 29.8% underwent magnetic resonance cholangio--pancreatography diagnosing gallstones in 62.4%, bile duct dilatation in 25.4% and common bile duct stones in 14.4%. 20.6% had recurrent pancreatitis with gallstones accounting for a third. 17% with gallstone AP had a cholecystectomy within the guideline recommended time period. CONCLUSION: Imaging is rarely required for the diagnosis of AP. CT is used responsibly in AP management. Imaging should be used more to exclude gallstones, including in presumed alcohol related AP. Increased diagnostic efforts will not reduce recurrent biliary AP unless matched by earlier gallstone treatment. Advances in knowledge: Whilst CT is used responsibly in AP greater use of other diagnostic modalities is required to identify reversible causes, in particular gallstones, in order to prevent recurrent AP.
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