Calculi - biliary

Last updated: Thursday, 08, April, 2004

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Item Process
Specimen

Calculus obtained at endoscopy or open surgery.

Method

Qualitative tests, X-ray diffraction or spectrophotometry on pulverised, dissolved calculus.

Application

Rarely of value. May be indicated to confirm suspicion of a pure pigment stone.

Interpretation

Pure pigment stones are seen in chronic haemolysis.

Reference

Redinger RN and Small DM. Arch Int Med 1972; 130: 618-630.