Gallbladder Hydrops Diagnosis and Management

Diagnostic Criteria

A gallbladder with a transverse diameter >5 cm may indicate cholecystitis or other pathology in adults, according to the American College of Radiology 1
Gallbladder hydrops is a distinct clinical entity characterized by acute distension of the gallbladder without gallstones, absence of congenital biliary anomalies, absence of acute local inflammation, and association with systemic illnesses, particularly in pediatric patients, as defined by the Society of Pediatric Radiology 1
A thin gallbladder wall is more consistent with hydrops than acute cholecystitis, which typically presents with wall thickening >3 mm, as stated by the World Journal of Emergency Surgery 2

Acute acalculous cholecystitis should be considered in adults with a distended gallbladder and thin wall, characterized by wall thickening >3 mm and pericholecystic fluid, according to the World Journal of Emergency Surgery 2
Cystic duct obstruction may cause distension with or without stones, as reported by the World Journal of Emergency Surgery 2

Optimize ultrasound technique to confirm findings and exclude alternative diagnoses, including documenting presence or absence of gallstones, measuring wall thickness, assessing for pericholecystic fluid, checking for sonographic Murphy's sign, and evaluating common bile duct diameter, as recommended by the American Institute of Ultrasound in Medicine 1, 3
Clinical correlation is essential, evaluating for right upper quadrant pain, fever, physical Murphy's sign, and any underlying systemic illness, as emphasized by the World Journal of Emergency Surgery 2

Early laparoscopic cholecystectomy within 7-10 days is the standard approach for adult cholecystitis, as stated by the Society of American Gastrointestinal and Endoscopic Surgeons 2
Medical management is preferred for true pediatric hydrops, with surgical intervention reserved only for complications, according to the American Academy of Pediatrics 1