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Updated: Jul 17, 2026

Endoscopic Ultrasound-Guided Biliary Drainage: Endoscopic Ultrasound-Guided Hepaticogastrostomy in Malignant Biliary Obstruction
Published on: March 25, 2022
Adenosquamous/squamous cell carcinoma of the gallbladder
Kun-Ming Chan1, Ming-Chin Yu, Wei-Chen Lee
1Department of General Surgery, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Linkou, Taiwan, ROC.
Gallbladder adenosquamous/squamous cell carcinoma shares clinical features with adenocarcinoma but shows advanced stages and liver involvement. Curative resection significantly improves survival for both gallbladder cancer subtypes.
Area of Science:
- Oncology
- Gastroenterology
- Surgical Pathology
Background:
- Adenosquamous/squamous cell carcinoma is a rare gallbladder malignancy.
- Limited data exists on its clinical presentation and comparison to adenocarcinoma.
Purpose of the Study:
- To compare clinical features and outcomes of adenosquamous/squamous cell carcinoma with adenocarcinoma.
- To identify differences and similarities between these gallbladder cancer subtypes.
Main Methods:
- Retrospective review of gallbladder carcinoma patients.
- Categorization into Group I (adenosquamous/squamous cell) and Group II (adenocarcinoma).
- Comparison of clinical characteristics and outcomes.
Main Results:
- No significant difference in general clinical features between groups.
- Group I showed significantly advanced tumor stages and liver involvement.
- Outcomes for advanced-stage patients were similar between groups.
- Curative resection improved survival in advanced-stage patients for both subtypes.
Conclusions:
- Gallbladder adenosquamous/squamous cell carcinoma is clinically similar to adenocarcinoma but prone to liver infiltration.
- Both subtypes have poor outcomes, but curative resection offers better survival.
- Early detection and surgical intervention are crucial for improving patient prognosis.
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