What is the role of radionucleotide studies in the workup of fever of unknown origin (FUO)?

Updated: May 17, 2021
  • Author: Sandra G Gompf, MD, FACP, FIDSA; Chief Editor: Michael Stuart Bronze, MD  more...
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Radionucleotide studies using gallium citrate are used to detect chronic inflammation and may be more sensitive in detecting occult abscesses, neoplasms, or soft-tissue lymphomas in FUO of more than 2 weeks’ duration. Indium WBC scan, using granulocytes labeled with indium In 111 (111In), can be cumbersome and often insensitive in chronic inflammatory states.

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