Mucormycosis MRI: Difference between revisions

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Latest revision as of 22:46, 29 July 2020

Black turbinate sign in rhinocerebral mucormycosis (devitalization of the sinonasal mucosa caused by mycotic vascular invasion

Mucormycosis Microchapters

Home

Patient Information

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Mucormycosis from other Diseases

Epidemiology and Demographics

Risk Factors

Screening

Natural History, Complications and Prognosis

Diagnosis

Diagnostic Criteria

History and Symptoms

Physical Examination

Laboratory Findings

X Ray

CT

MRI

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Surgery

Primary Prevention

Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Syed Hassan A. Kazmi BSc, MD [2]

Overview

MRI in mucormycosis tends to show isotense or hypointense in all sequences. The black turbinate sign is an important finding in rhinocerebral involvement.

Key MRI Findings in Mucormycosis

MRI in rhinocerebral mucormycosis may demonstrate:[1]

  • Black turbinate sign (devitalization of the sinonasal mucosa caused by mycotic vascular invasion).
  • MRI signal intensity of mucormycosis lesions tends to be isointense or hypointense in all sequences.
  • Gadolinium contrast shows the lesions to have variable enhancement patterns ranging from homogeneous to heterogenous or non-enhancing at all.
  • Contrast-enhanced T1-weighted images are helpful in establishing the intracranial spread when meningeal enhancement is present as well as in identifying invasion of the cavernous portion of the internal carotid artery by the disease.

References

  1. Herrera DA, Dublin AB, Ormsby EL, Aminpour S, Howell LP (2009). "Imaging findings of rhinocerebral mucormycosis". Skull Base. 19 (2): 117–25. doi:10.1055/s-0028-1096209. PMC 2671302. PMID 19721767.

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