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Cholecystokinin infusion and gall bladder dysfunction
  1. G W MIDDLETON
  1. J H WILLIAMS
  1. Principal Physicist,
  2. Department of Medical Physics and Clinical Engineering,
  3. University Hospital of Wales,
  4. Heath Park,
  5. Cardiff CF4 4XW, UK
  6. Consultant Radiologist,
  7. Department of Radiology,
  8. Princess of Wales Hospital,
  9. Coity Road,
  10. Bridgend CF31 1RQ, UK

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Editor,—We read with interest the commentary by Al-Musawi and Williamson (Gut1998;43:454–5) and the paper in the same issue by Smythe et al(Gut1998;43:571–8). We agree with Al-Musawi and Williamson that six months is an inadequate follow up time, that identification of cystic duct abnormalities is important and in particular that cholecystokinin (CCK) scintigraphy is a more accurate technique than either ultrasound or oral cholecystography. We however disagree with their view that the CCK provocation test, based solely …

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