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Left-sided gallbladder: its clinical significance and imaging presentations
Sheng-Lung Hsu1, Tai-Yi Chen, Tung-Liang Huang
1Department of Diagnostic Radiology, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan, 123 Ta-Pei Road, Niao-Sung, Kaohsiung, 833, Taiwan, China.
World Journal of Gastroenterology
|December 18, 2007
Summary
Left-sided gallbladder is a rare but important clinical finding. Preoperative diagnosis using ultrasound, CT, and angiography is crucial due to associated vascular anomalies, aiding in safe hepatectomy.
Area of Science:
- Hepatobiliary Surgery
- Diagnostic Imaging
- Anatomical Variations
Background:
- Left-sided gallbladder is a rare anatomical variation.
- Associated portal venous and biliary anomalies can complicate hepatectomy.
- Accurate preoperative diagnosis is essential for surgical planning.
Purpose of the Study:
- To evaluate the diagnostic utility of ultrasound (US), CT, and angiography for left-sided gallbladder.
- To assess the importance of preoperative diagnosis in patients undergoing hepatectomy.
Main Methods:
- Retrospective review of 1482 patients who underwent enhanced CT.
- Analysis of imaging presentations on US, CT, and angiography.
- Diagnosis of left-sided gallbladder based on the presence of right-sided ligamentum teres.
Main Results:
- Left-sided gallbladder identified in nine patients.
- Associated CT findings included portal vein anomalies and difficulty defining segment IV.
- Angiography revealed abnormal portal venous systems and hepatic artery variations.
- Hepatectomy confirmed the diagnosis in three patients with liver tumors.
Conclusions:
- Left-sided gallbladder is a significant clinical entity in hepatectomy.
- Associated vascular anomalies necessitate careful preoperative assessment.
- Imaging findings like absent segment IV and abnormal portal veins should raise suspicion.
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