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Updated: Dec 20, 2025

An Immunohistopathologic Study to Profile the Folate Receptor Beta Macrophage and Vascular Immune Microenvironment in Giant Cell Arteritis
Published on: February 8, 2019
Large vessel vasculitis secondary to granulocyte-colony stimulating factor
Juan José Soto Castillo1, Jesús Loarce-Martos1, José Miguel Blanc-Molina1
1Hospital Universitario Ramon y Cajal, Madrid, Spain.
Aortitis, a rare cause of fever of unknown origin, can stem from rheumatologic conditions or iatrogenic factors like chemotherapy. Differentiating aortitis in febrile neutropenia requires careful consideration of these diverse etiologies.
Area of Science:
- Vascular Medicine
- Rheumatology
- Oncology
Background:
- Aortitis is an uncommon condition presenting as fever of unknown origin.
- Etiologies are diverse, primarily rheumatologic but also iatrogenic.
- Iatrogenic causes include chemotherapy and supportive treatments like granulocyte-colony stimulating factor.
Purpose of the Study:
- To highlight the varied etiologies of aortitis.
- To emphasize the growing evidence for pharmacological links to aortitis.
- To discuss the diagnostic challenges of fever in febrile neutropenia.
Main Methods:
- Review of existing literature on aortitis and its causes.
- Analysis of case studies involving iatrogenic aortitis.
- Discussion of differential diagnosis in febrile neutropenia.
Main Results:
- Aortitis presents a diagnostic challenge, particularly in febrile neutropenia.
- Rheumatologic conditions are common causes, but iatrogenic factors are increasingly recognized.
- Evidence supports a link between certain medical treatments and aortitis development.
Conclusions:
- Fever of unknown origin necessitates a broad differential diagnosis including aortitis.
- Healthcare providers must consider iatrogenic causes, especially in patients undergoing chemotherapy or supportive treatments.
- Further research is needed to fully elucidate the pharmacological links and improve diagnostic strategies for aortitis.
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