Gastroenterology · Hepatobiliary Disease
The facts most likely to be tested
Chronic cholecystitis is characterized by recurrent episodes of biliary colic caused by transient obstruction of the cystic duct by gallstones.
The gold standard diagnostic imaging modality for chronic cholecystitis is transabdominal ultrasound, which typically reveals cholelithiasis and a thickened gallbladder wall.
Patients with chronic cholecystitis often present with postprandial right upper quadrant (RUQ) pain that radiates to the right scapula or shoulder.
A porcelain gallbladder, defined as calcification of the gallbladder wall, is a rare complication of chronic cholecystitis that carries a high risk of gallbladder adenocarcinoma.
The definitive treatment for symptomatic chronic cholecystitis is elective laparoscopic cholecystectomy.
Unlike acute cholecystitis, chronic cholecystitis lacks signs of systemic inflammation such as fever, leukocytosis, or a positive Murphy sign.
If ultrasound is inconclusive, a HIDA scan (cholescintigraphy) can be used to assess gallbladder ejection fraction, where a low value indicates biliary dyskinesia.
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A 42-year-old female presents to the clinic with a 3-month history of intermittent, sharp right upper quadrant pain that occurs 30 minutes after eating fatty meals. The pain typically resolves within 2 hours and does not radiate to the back. She denies fever, chills, nausea, or vomiting. Physical examination reveals a soft, non-tender abdomen with no Murphy sign. Laboratory studies, including CBC, LFTs, and lipase, are within normal limits. An abdominal ultrasound demonstrates multiple mobile, echogenic foci with posterior acoustic shadowing within the gallbladder.
What is the most appropriate management for this patient?
Elective laparoscopic cholecystectomy
The patient's presentation of recurrent postprandial biliary colic and ultrasound findings of cholelithiasis without signs of acute inflammation is diagnostic of chronic cholecystitis, for which elective surgery is the definitive treatment.
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Etiology / Epidemiology
Caused by repeated bouts of biliary colic or mechanical irritation from gallstones. Most common in female, forty, fat, fertile patients.
Clinical Manifestations
Recurrent episodes of biliary colic, typically postprandial RUQ pain radiating to the right scapula (Boas sign).
Diagnosis
Abdominal ultrasound is the initial test of choice; cholecystectomy is the definitive management.
Treatment
Elective laparoscopic cholecystectomy is the standard of care. Avoid surgery if patient is medically unstable.
Prognosis
Excellent outcomes post-surgery; <1% mortality in elective cases. Monitor for porcelain gallbladder risk.
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Epidemiology & Etiology
Chronic cholecystitis results from prolonged mechanical irritation of the gallbladder wall by stones. It is strongly associated with the classic 4 Fs: Female, Forty, Fat, and Fertile. Chronic inflammation leads to progressive fibrosis and thickening of the gallbladder wall.
Pertinent Anatomy
The gallbladder stores bile produced by the liver, emptying via the cystic duct into the common bile duct. Obstruction at the cystic duct by a stone is the primary trigger for symptomatic episodes.
Pathophysiology
Repeated episodes of cystic duct obstruction cause transient gallbladder distension and inflammation. Over time, this leads to fibrosis and muscular hypertrophy of the gallbladder wall. The gallbladder may eventually become shrunken and non-functional, a state sometimes termed a porcelain gallbladder.
Clinical Manifestations
Patients present with recurrent, episodic RUQ pain or epigastric distress, often triggered by fatty meals. Physical exam is typically benign between attacks, unlike the peritoneal signs seen in acute cholecystitis. Look for Boas sign, which is hyperesthesia below the right scapula.
Diagnosis
Abdominal ultrasound is the gold standard initial imaging to visualize stones and wall thickening. A gallbladder wall thickness >3 mm is considered abnormal. If ultrasound is equivocal, a HIDA scan can assess gallbladder ejection fraction.
Treatment
Elective laparoscopic cholecystectomy is the definitive treatment to prevent future complications. Patients who are poor surgical candidates may be managed with ursodeoxycholic acid to dissolve stones, though this is rarely curative. Do not delay surgery if the patient develops signs of acute cholecystitis or cholangitis.
Prognosis
Elective surgery carries a <1% mortality rate and provides complete symptom resolution. Long-term untreated chronic cholecystitis increases the risk of gallbladder carcinoma due to chronic mucosal irritation.
Differential Diagnosis
Peptic Ulcer Disease: pain relieved by food or antacids
GERD: retrosternal burning, not RUQ localized
Choledocholithiasis: associated with jaundice and elevated bilirubin
Pancreatitis: elevated lipase and epigastric pain radiating to the back
Hepatitis: elevated transaminases and systemic viral symptoms