Don’t have a gallbladder removed prophylactically just because an ultrasound found gallstones but you’ve never felt any pain

Cost: There’s no cost at all — you even avoid the expense of general anesthesia and a hospital stay. The trade-off is simply remembering a few warning signs that mean you must seek medical care right away.
In plain terms: For people with gallstones but no pain, roughly 80% remained symptom-free over the next nine years. Without any intervention, only about 0.1% to 0.3% develop acute cholecystitis or pancreatitis each year. Gallbladder removal isn’t risk-free either: roughly 1.5% of patients suffer bile duct injury. That’s why European and UK medical guidelines recommend against surgery when there are no symptoms.
Benefit: In Italy, the MICOL study followed 11,229 people aged 29 to 69 using ultrasound screening. Of those, 856 had gallstones; 580 had none at all. After an average of 8.7 years of follow-up, 453 of those 580 (78.1%) stayed symptom-free, 61 (10.5%) experienced mild symptoms, and 66 (11.4%) had severe symptoms. During that time, 189 gallbladder removals were performed, and 41.3% of those surgeries were on patients without any symptoms. The study authors concluded that watchful waiting remains the best approach for most patients. Another US study of 691 patients with gallstones showed that among 135 symptom-free patients followed for an average of 58 months, only 10% developed symptoms and 7% needed surgery. Of all 50 deaths recorded, just two were linked to the bile ducts, and both occurred in patients with symptoms. The authors stressed that people with silent gallstones shouldn’t undergo surgery before symptoms appear. UK NICE guidelines explicitly state that people with no symptoms and normal bile ducts don’t need treatment. European liver disease guidelines note that each year, 0.7% to 2.5% of symptom-free patients develop symptoms, while 0.1% to 0.3% suffer acute cholecystitis, pancreatitis, jaundice, or cholangitis. After the first episode of pain, that risk rises to 1% to 3% annually. Swedish national data show that 1.5% of 51,041 gallbladder removals cause bile duct injury, with 0.3% resulting in partial or total duct rupture; mortality within a year is 3.9% for those with injury versus 1.1% otherwise. Even after surgery, 10% to 40% of patients still experience discomfort. Overall, guidelines agree that surgery doesn’t extend life expectancy for symptom-free patients, and the procedure’s risks outweigh those of leaving the organ intact. Waiting until symptoms appear also saves money. One 1983 estimate found that a 30-year-old man who chooses prophylactic removal lives 4 days less on average, while a 50-year-old loses 18 days. To date, no randomized trials have compared prophylactic removal to watchful waiting, yet the idea that “it’s better to remove it now before pain starts” remains common.
Evidence grade: A
Sources:Festi D, Reggiani ML, Attili AF, et al. (2010). Natural history of gallstone disease: Expectant management or active treatment? Results from a population-based cohort study. Journal of Gastroenterology and Hepatology, 25(4), 719-724. https://doi.org/10.1111/j.1440-1746.2009.06146.x；McSherry CK, Ferstenberg H, Calhoun WF, Lahman E, Virshup M (1985). The natural history of diagnosed gallstone disease in symptomatic and asymptomatic patients. Annals of Surgery, 202(1), 59-63. https://doi.org/10.1097/00000658-198507000-00009；National Institute for Health and Care Excellence (2014). Gallstone disease: diagnosis and management. NICE guideline CG188，第 1.2.1、1.3.1 条. https://www.nice.org.uk/guidance/cg188/chapter/Recommendations；European Association for the Study of the Liver (2016). EASL Clinical Practice Guidelines on the prevention, diagnosis and treatment of gallstones. Journal of Hepatology, 65(1), 146-181. https://doi.org/10.1016/j.jhep.2016.03.005；Törnqvist B, Strömberg C, Persson G, Nilsson M (2012). Effect of intended intraoperative cholangiography and early detection of bile duct injury on survival after cholecystectomy: population based cohort study. BMJ, 345, e6457. https://doi.org/10.1136/bmj.e6457；Ransohoff DF, Gracie WA, Wolfenson LB, Neuhauser D (1983). Prophylactic cholecystectomy or expectant management for silent gallstones. A decision analysis to assess survival. Annals of Internal Medicine, 99(2), 199-204. https://doi.org/10.7326/0003-4819-99-2-199；Gurusamy KS, Samraj K (2007). Cholecystectomy versus no cholecystectomy in patients with silent gallstones. Cochrane Database of Systematic Reviews, CD006230. https://doi.org/10.1002/14651858.CD006230.pub2；反方：Venneman NG, Buskens E, Besselink MG, et al. (2005). Small gallstones are associated with increased risk of acute pancreatitis: potential benefits of prophylactic cholecystectomy? American Journal of Gastroenterology, 100(11), 2540-2550. https://doi.org/10.1111/j.1572-0241.2005.00317.x；中华医学会外科学分会胆道外科学组, 中国医师协会外科医师分会胆道外科医师委员会 (2022). 胆囊良性疾病外科治疗的专家共识（2021版）. 中华外科杂志, 60(1), 4-9. https://doi.org/10.3760/cma.j.cn112139-20210811-00373（全文需订阅，未取得）；同上 (2022). 《胆囊良性疾病外科治疗的专家共识（2021版）》解读. 中华外科杂志, 60(4), 337-342. https://doi.org/10.3760/cma.j.cn112139-20220119-00031
Notes: This topic is still debated. China’s 2021 expert consensus on biliary surgery includes some asymptomatic gallstone cases as surgical candidates, and related commentary highlights this controversy as a key point of discussion. The exact criteria for those exceptions haven’t been verified yet. Another counterpoint concerns small stones: those under 5 mm are more closely linked to pancreatitis, and Dutch research suggests prophylactic removal might either extend or shorten life depending on how common and severe pancreatitis is in a given population. European guidelines do list two exceptions: porcelain gallbladder and gallstones over 1 cm alongside large polyps — both warrant removal. Removal may also be considered during other major abdominal surgeries. Crucially, this advice applies only to stones inside the gallbladder with no prior symptoms; stones in the common bile duct are a completely different matter. UK and European guidelines both stress that stones in the bile duct must be removed along with the gallbladder, regardless of symptoms. Seek emergency care immediately if you experience persistent upper abdominal pain, fever, chills, yellowing of the eyes or skin, or dark urine. When a doctor recommends surgery after reviewing imaging, ask which specific criteria prompted that decision — whether it’s bile duct involvement, polyps, or abnormal gallbladder walls — so you can weigh those factors against this general guideline, which is meant to discourage surgery without any valid medical reason. Both cited studies tracked patients over 4 to 9 years, focusing on what happens when no intervention is taken; they don’t compare treatment effectiveness. Longer follow-ups would likely show a higher rate of symptom development. 〔61.6〕〔50.2〕〔46.3〕〔188〕〔2016〕