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Pulmonary Mucormycosis: Risk Factors, Radiologic Findings, and Pathologic Correlation.

Rishi Agrawal1, Anjana Yeldandi1, Hatice Savas1

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Radiographics : a Review Publication of the Radiological Society of North America, Inc
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This summary is machine-generated.

Pulmonary mucormycosis (PM) is a rare fungal infection in immunocompromised individuals. Early diagnosis and treatment, including imaging and tissue sampling, are crucial for improving survival rates.

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Area of Science:

  • Medical Mycology
  • Pulmonary Medicine
  • Radiology

Background:

  • Pulmonary mucormycosis (PM) is an uncommon but severe fungal infection.
  • It primarily affects immunocompromised patients, often due to inhalation of spores from environmental sources.
  • Risk factors include diabetes mellitus, hematologic malignancy, and transplant recipients.

Purpose of the Study:

  • To review risk factors, imaging findings, and treatment of pulmonary mucormycosis.
  • To highlight key radiologic features that differentiate PM from invasive pulmonary aspergillosis (IPA).
  • To emphasize the importance of early diagnosis for improved patient outcomes.

Main Methods:

  • Review of existing literature on pulmonary mucormycosis.
  • Analysis of radiologic findings associated with PM and IPA.
  • Discussion of diagnostic methods including tissue sampling.
  • Overview of current treatment strategies.

Main Results:

  • PM imaging can be nonspecific, progressing from ground-glass opacity to consolidation, nodules, or masses.
  • Specific radiologic signs like the reverse halo sign, pleural effusions, and multiple nodules (>10) are more suggestive of PM than IPA.
  • Tissue identification of fungal hyphae confirms the diagnosis.
  • PM can progress rapidly, especially in neutropenic patients.

Conclusions:

  • Early identification of PM is critical due to its high mortality rate.
  • Differentiating PM from IPA based on imaging and diagnostic sampling is essential for appropriate management.
  • A multimodality treatment approach combining antifungal agents and surgical intervention improves outcomes.