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Clin Microbiol Rev. 2011 Apr;24(2):247-80. doi: 10.1128/CMR.00053-10.

Histopathologic diagnosis of fungal infections in the 21st century.

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1
Department of Pathology and Laboratory Medicine, Emory University Hospital, Atlanta, GA 30322, USA. jguarne@emory.edu

Abstract

Fungal infections are becoming more frequent because of expansion of at-risk populations and the use of treatment modalities that permit longer survival of these patients. Because histopathologic examination of tissues detects fungal invasion of tissues and vessels as well as the host reaction to the fungus, it is and will remain an important tool to define the diagnostic significance of positive culture isolates or results from PCR testing. However, there are very few instances where the morphological characteristics of fungi are specific. Therefore, histopathologic diagnosis should be primarily descriptive of the fungus and should include the presence or absence of tissue invasion and the host reaction to the infection. The pathology report should also include a comment stating the most frequent fungi associated with that morphology as well as other possible fungi and parasites that should be considered in the differential diagnosis. Alternate techniques have been used to determine the specific agent present in the histopathologic specimen, including immunohistochemistry, in situ hybridization, and PCR. In addition, techniques such as laser microdissection will be useful to detect the now more frequently recognized dual fungal infections and the local environment in which this phenomenon occurs.

PMID:
21482725
PMCID:
PMC3122495
DOI:
10.1128/CMR.00053-10
[Indexed for MEDLINE]
Free PMC Article
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