Background: The surgical operation associated with improved pain and quality of life (QoL) in patients with chronic pancreatitis (CP) is unknown. Method: The Scopus, EMBASE, Medline and Cochrane databases were systematically searched until May 2019 and all randomised trials (RCTs) comparing surgical operations for CP pain were included in a network meta-analysis (NMA). Results: Four surgical operations for treating CP were directly compared in eight RCTs including 597 patients. Patients were mainly male (79%, 474/597) with alcoholic CP (85%, 382/452). Surgical operations included were pancreatoduodenectomy (224, 38%), Berne procedure (168, 28%), Beger procedure (133, 22%), and Frey procedure (72, 12%). NMA revealed that the Beger procedure ranked best for pain relief, while the Frey procedure ranked best for postoperative QoL, postoperative pancreatic fistula rate and postoperative exocrine insufficiency rate. Overall the Frey procedure ranked best for the combination of primary outcome measures based on surface under cumulative ranking curve scores. Conclusions: Overall the Frey procedure is the best operation for both pain relief and postoperative QoL in patients with CP. New validated tools to assess CP pain and the influence of various types of pain patterns on QoL will allow future trials to better stratify patients. Given the different inclusion criteria, pain and QoL assessment and duration of symptoms, and increasing uptake of enhanced recovery protocols, further trials are required to investigate the role of surgery for different CP phenotypes, timing of surgery and in defining the role of surgery in relation to endotherapy.
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