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Related Experiment Videos

Flare response seen in therapy for osteomalacia

S Akaki1, K Ida, S Kanazawa

  • 1Department of Radiology, Okayama University Medical School, Japan.

Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine
|December 29, 1998
PubMed
Summary

This case study details osteomalacia treatment, observing a flare response during vitamin D therapy. Bone scans revealed initial uptake, a temporary increase, and eventual decrease in abnormalities, highlighting treatment effects.

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Area of Science:

  • Nuclear Medicine
  • Radiology
  • Endocrinology

Background:

  • Osteomalacia is a condition characterized by inadequate mineralization of bone.
  • Bone scintigraphy and CT are crucial diagnostic tools for osteomalacia.
  • Vitamin D therapy is the standard treatment for osteomalacia.

Observation:

  • Initial bone scan revealed increased uptake in ribs, clavicles, and iliac bones.
  • Thoracic CT identified Looser's zones, pathognomonic for osteomalacia.
  • Despite symptom relief, a second bone scan showed increased uptake (flare response) in clavicles and new lesions.

Findings:

  • The observed flare response during vitamin D therapy is an unusual finding.
  • The flare response may represent increased bone turnover during healing.

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  • A subsequent bone scan showed resolution of abnormalities, confirming treatment efficacy.

    • Implications:

    • This case highlights the importance of serial bone imaging to monitor osteomalacia treatment.
    • Understanding the flare response can prevent misinterpretation of bone scans during therapy.
    • Further research into the mechanisms of flare response in osteomalacia is warranted.