Summary
Definition
Acute cholecystitis is acute gallbladder inflammation, and one of the major complications of cholelithiasis or gallstones. It develops in up to 10% of patients with symptomatic gallstones.[1] In most cases (90%), it is caused by complete cystic duct obstruction usually due to an impacted gallstone in the gallbladder neck or cystic duct, which leads to inflammation within the gallbladder wall.[1] In 5% of cases, bile inspissation (due to dehydration) or bile stasis (due to trauma or severe systemic illness) can block the cystic duct, causing an acalculous cholecystitis.[1]
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History and exam
Key diagnostic factors
- pain in the upper right quadrant
- tenderness in the right upper quadrant
- signs and symptoms of inflammation
- palpable mass
- presence of risk factors
Risk factors
- gallstones
- physical inactivity
- low fibre intake
- severe illness
- trauma
- severe burns
- total parenteral nutrition (TPN)
- diabetes
- ceftriaxone
- ciclosporin
- hepatic arterial embolisation
- infections
Diagnostic investigations
1st investigations to order
- CT or MRI of the abdomen
- abdominal ultrasound
- FBC
- CRP
- bilirubin
- LFTs
- serum lipase or amylase
- blood cultures and/or bile cultures
Investigations to consider
- magnetic resonance cholangiopancreatography (MRCP)
- endoscopic ultrasound (EUS)
Treatment algorithm
Contributors
Expert advisers
John Abercrombie,
General and Colorectal Surgeon
Queen's Medical Centre
Nottingham
UK
Biography
JA is Clinical Lead for General Surgery, Getting It Right First Time.
Disclosures
JA is a council member of the Royal College of Surgeons of England.
Acknowledgements,
BMJ Best Practice would like to gratefully acknowledge the previous expert contributor, whose work has been retained in parts of the content:
Charles Bellows MD
Professor of Surgery
University of New Mexico School of Medicine
Albuquerque
NM
Disclosures
CB is an author of one study referenced in this topic. CB declares that he has no other competing interests.
Peer reviewers
Christian Macutkiewicz, MD, FHEA, FRCS
Consultant General and Hepato-Pancreato-Biliary Surgeon
Clinical Lead for Emergency General Surgery, Gastrointestinal Medicine, and Surgery CSU
Manchester Royal Infirmary
Manchester
Director of Scientific Programme
Association of Surgeons of Great Britain and Ireland
UK
Disclosures
CM declares that he has no competing interests.
Editors
Emma Quigley,
Section Editor, BMJ Best Practice
Disclosures
EQ declares that she has no competing interests.
Sue Mayor,
Lead Section Editor, BMJ Best Practice
Disclosures
SM works as a freelance medical journalist and editor, video editorial director and presenter, and communications trainer. In this capacity, she has been paid, and continues to be paid, by a wide range of organisations for providing these skills on a professional basis. These include: NHS organisations, including NICE, NHS Choices, NHS Kidney Care, and others; publishers and medical education companies, including the BMJ Group, the Lancet group, Medscape, and others; professional organisations, including the British Thoracic Oncology Group, the European Society for Medical Oncology, NCEPOD, and others; charities and patients’ organisations, including the Roy Castle Lung Cancer Foundation and others; pharmaceutical companies, including Bayer, Boehringer Ingelheim, Novartis, and others; and communications agencies, including Publicis, Red Healthcare, and others. She has no stock options or shares in any pharmaceutical or healthcare companies; however, she invests in a personal pension, which may invest in these types of companies. She is managing director of Susan Mayor Limited, the company name under which she provides medical writing and communications services.
Tannaz Aliabadi-Oglesby,
Lead Section Editor, BMJ Best Practice
Disclosures
TAO declares that she has no competing interests.
Julie Costello,
Comorbidities Editor, BMJ Best Practice
Disclosures
JC declares that she has no competing interests.
Adam Mitchell,
Drug Editor, BMJ Best Practice
Disclosures
AM declares that he has no competing interests.
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