College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea.
College of Veterinary Medicine, Kangwon National University, Chuncheon, Republic of Korea.
Vet Radiol Ultrasound. 2023 Jul;64(4):593-598. doi: 10.1111/vru.13233. Epub 2023 Mar 29.
Increased soft-tissue opacity in the region of the canine gallbladder is incidentally detected on radiographs. We hypothesized that there is a difference in the detection of gallbladder sediment on radiographs depending on the amount or mobility of the sediment. In this retrospective and analytical study, we aimed to assess the ultrasonographic features of gallbladder sediment that were detected radiographically. We also aimed to assess the differences in the detection of increased opacity of the gallbladder between radiographic views. We included 223 dogs that underwent thoracic radiography, abdominal radiography, and gallbladder ultrasonography. Ultrasonographic images of the gallbladder were divided into five groups: group 1, gravity-dependent sediment occupying < 50% of the gallbladder; group 2, gravity-dependent sediment occupying ≥50%; group 3, sediment attached to the gallbladder wall; group 4, sludge ball; and group 5, gallbladder mucocele. Dogs showing increased opacity on subjective assessment of any radiographic view were recorded, and the sensitivity of radiographic views for detecting gallbladder sediment was analyzed. Of 168 dogs with gallbladder sediment, 37 had increased opacity on at least one radiographic projection. The frequency was compared as a percentage within each category, and Group 4 was the highest percentage with increased radiographic gallbladder opacity, followed by Groups 2 and 5. The sensitivity for detecting increased opacity was highest in the thoracic ventrodorsal view. Thus, in dogs with increased gallbladder opacity on radiographs, large amounts of gallbladder sediment, sludge balls, and gallbladder mucocele should be considered differential diagnoses. In addition, the thoracic ventrodorsal view is recommended to evaluate gallbladder opacity.
在放射影像中偶然会发现犬胆囊区域的软组织密度增加。我们假设，胆囊沉积物的检出率取决于沉积物的数量或活动性。在这项回顾性和分析性研究中，我们旨在评估放射影像学上检测到的胆囊沉积物的超声特征。我们还旨在评估不同的放射影像学胆囊不透明度检测之间的差异。我们纳入了 223 只接受了胸部放射摄影、腹部放射摄影和胆囊超声检查的犬。将胆囊的超声图像分为五组：组 1，重力依赖的沉积物占据胆囊的 <50%；组 2，重力依赖的沉积物占据 ≥50%；组 3，沉积物附着在胆囊壁上；组 4，泥沙球；组 5，胆囊黏液囊肿。记录了在任何放射影像学评估中显示胆囊不透明度增加的犬，并分析了放射影像学视图检测胆囊沉积物的敏感性。在 168 只具有胆囊沉积物的犬中，有 37 只在至少一个放射投影中显示胆囊不透明度增加。对每个组内的百分比进行比较，组 4 是显示放射学上胆囊不透明度增加的百分比最高的组，其次是组 2 和组 5。在检测胆囊不透明度方面，胸部腹背位的敏感性最高。因此，在放射影像学上显示胆囊不透明度增加的犬中，应考虑大量的胆囊沉积物、泥沙球和胆囊黏液囊肿作为鉴别诊断。此外，建议使用胸部腹背位来评估胆囊不透明度。
