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Brushing cytology in biliary tract obstruction
M Rupp1, C M Hawthorne, H Ehya
1Department of Pathology and Cell Biology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania 19107.
Acta Cytologica
|March 1, 1990
Summary
Cytologic analysis of biliary obstruction samples reliably identifies adenocarcinoma. However, a negative cytologic diagnosis does not rule out malignancy, necessitating further investigation for obstructive jaundice.
Area of Science:
- Hepatobiliary medicine
- Gastroenterology
- Diagnostic cytology
Background:
- Obstructive jaundice presents diagnostic challenges.
- Cytology aids in evaluating biliary tract diseases.
Purpose of the Study:
- To assess the diagnostic accuracy of biliary cytology in obstructive jaundice.
- To determine the reliability of positive and negative cytologic findings.
Main Methods:
- Cytologic samples collected via brushing and reverse screw during transhepatic cholangiography.
- Histologic examination and clinical follow-up used for confirmation.
- Analysis of 54 patients over an eight-year period (1980-1987).
Main Results:
- 32 of 46 patients with positive cytology were diagnosed with adenocarcinoma (pancreatic, bile duct, ampullary, gallbladder, metastatic).
- One false positive cytologic diagnosis occurred.
- 7 of 14 patients with negative cytology were diagnosed with malignancy.
Conclusions:
- Positive biliary cytology is a reliable indicator of malignant biliary obstruction.
- Negative biliary cytology does not exclude malignancy and requires further evaluation.