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The non-visualized gallbladder by ultrasonography implications and differential diagnosis
Journal of the Canadian Association of Radiologists
|June 1, 1983
Summary
Ultrasonography can detect gallbladder disease. A dense echogenic focus with acoustic shadowing accurately predicts gallbladder disease (96%), but non-visualization is less reliable (71%).
Area of Science:
- Radiology
- Gastroenterology
- Abdominal Imaging
Background:
- Gallbladder visualization on ultrasound is crucial for diagnosing gallbladder disease.
- Certain ultrasound findings, like non-visualization or echogenic foci, can indicate pathology.
Purpose of the Study:
- To evaluate the diagnostic accuracy of gallbladder non-visualization and dense echogenic foci with acoustic shadowing in predicting gallbladder disease.
Main Methods:
- Retrospective review of 42 consecutive patients with non-visualized gallbladders or gallbladder lumen on ultrasound.
- Categorization into two groups: those with dense echogenic foci and acoustic shadowing, and those with complete non-visualization.
Main Results:
- In 32 patients with dense echogenic foci and acoustic shadowing, the accuracy in predicting gallbladder disease was 96%.
- In 8 patients with non-visualized gallbladders, the accuracy in predicting gallbladder disease was 71% (based on 7 with follow-up).
- Differential diagnoses for dense echoes included emphysematous cholecystitis, porcelain gallbladder, and gallbladder agenesis, not solely cholelithiasis.
Conclusions:
- Dense echogenic foci with acoustic shadowing are highly accurate indicators of gallbladder disease, likely cholelithiasis.
- Gallbladder non-visualization has lower accuracy and requires further investigation to rule out various gallbladder pathologies.