Exfoliative cytology of bile aspirated from percutaneously placed combined external/internal biliary drainage catheters yielded positive results in 34% of 100 cases. There were no false-positive results. Bile cytology is a simple, inexpensive, and useful method which can establish a diagnosis of malignant biliary obstruction after catheter decompression.

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http://dx.doi.org/10.1148/radiology.149.3.6647860DOI Listing

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