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Amiodarone-induced bone marrow granulomas: an unusual cause of reversible pancytopenia

Andrew J Erie1, Rebecca F McClure, Alexandra P Wolanskyj

  • 1Mayo Medical School.

Hematology Reports
|December 21, 2011
PubMed

Insights

Amiodarone can cause bone marrow granulomas, leading to pancytopenia. Discontinuing amiodarone therapy can reverse these blood count abnormalities over several months.

Area of Science:

  • Hematology
  • Pharmacology
  • Pathology

Background:

  • Bone marrow granulomas are uncommon and typically linked to infections, lymphomas, or sarcoidosis.
  • Drug-induced bone marrow granulomas are an underrecognized cause of hematologic abnormalities.
  • Amiodarone is a rare but documented cause of bone marrow granuloma formation.

Observation:

  • A 73-year-old male presented with pancytopenia during a preoperative assessment.
  • Diagnostic evaluation excluded other causes, leading to suspicion of amiodarone therapy.
  • Bone marrow biopsy revealed granulomas, consistent with amiodarone-induced pathology.

Findings:

  • Suspected amiodarone-induced bone marrow granuloma formation was identified as the cause of pancytopenia.
  • Cessation of amiodarone therapy resulted in the gradual resolution of pancytopenia.
  • Blood counts improved over several months following drug discontinuation.

Implications:

  • Highlights amiodarone as a potential cause of reversible pancytopenia.
  • Emphasizes the importance of considering drug etiologies for bone marrow granulomas.
  • Provides a clinical timeline for expected recovery after amiodarone cessation.
Keywords:
amiodarone.granulomaspancytopenia

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