Wang Q, Hu R, Zhu Y, Zhu W, Jiang H. Case Report: The application of metagenomic next generation sequencing in diagnosing
fungal malignant external otitis: a report of two cases.
Front Cell Infect Microbiol 2023;
13:1236414. [PMID:
38053531 PMCID:
PMC10694228 DOI:
10.3389/fcimb.2023.1236414]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 10/31/2023] [Indexed: 12/07/2023] Open
Abstract
Background
Most of malignant external otitis (MEO) cases reported in the literature are attributed to Pseudomonas aeruginosa. Fungal infections in MEO are also likely but extremely rare. And conventional microbiology tests is difficult to diagnose.
Case description
Two patients were diagnosed with Fungal malignant external otitis (FMEO) due to Aspergillus by metagenomic Next-Generation Sequencing (mNGS) and recovered after comprehensive treatment including operation and voriconazole. The antifungal treatment was delayed due to repeated cultures of secretions being negative and pathological examination showed granulation tissue proliferation with extensive neutrophil infiltration.
Conclusion
mNGS might be helpful for patients suspected with FMEO, especially when conventional microbiology tests were negative.
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