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Correlation of radiographic and ultrasonographic appearance of gallbladder opacity in dogs

VRU 2023- 64(4): 593-598

Background: Gallbladder sediment is a common finding in dogs, but its clinical significance and radiographic detection are unclear.

Study: The authors conducted a retrospective and analytical study to compare the ultrasonographic and radiographic features of gallbladder sediment in dogs.

Methods: They included 223 dogs that underwent thoracic and abdominal radiography and gallbladder ultrasonography. They classified the gallbladder sediment into five types based on ultrasound and assessed the presence of increased opacity in the region of the gallbladder on radiographs.

Results: They found that increased radiographic opacity in the region of the gallbladder was associated with large amounts of sediment, sludge balls, or gallbladder mucocele on ultrasound. They also found that the thoracic ventrodorsal view had the highest sensitivity for detecting gallbladder sediment on radiograph.

Limitations: The study had some limitations, such as incomplete medical records, lack of left lateral radiography, variable ultrasound protocols, and absence of surgical and chemical analysis of gallbladder sediment.

Conclusions: The study concluded that large amounts of sediment, sludge balls, or mucoceles can cause increased opacity in the region of the gallbladder on radiography and that the thoracic ventrodorsal view is recommended to evaluate gallbladder opacity.

Evaluation of increased opacity in the region of the gallbladder during radiographic examination in dogs. Increased opacity of gallbladder (arrows) on thoracic ventrodorsal (A), and right lateral (B) views, and abdominal ventrodorsal (C), and right lateral (D) views are detected. Radiographs were taken using 2.0 mAs and 66 kVp for thorax (A, B) and 3.2 mAs and 60 kVp for abdomen (C, D).

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