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Journal of Clinical Microbiology, November 2003, p. 5333-5336, Vol. 41, No. 11
0095-1137/03/$08.00+0     DOI: 10.1128/JCM.41.11.5333-5336.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Allergic Fungal Sinusitis Associated with Trichoderma longibrachiatum

Patrick Tang,1 Subhash Mohan,1 Lynne Sigler,2 Ian Witterick,3 Richard Summerbell,4 Iivi Campbell,1 and Tony Mazzulli1*

Department of Microbiology, Toronto Medical Laboratories and Mount Sinai Hospital,1 Department of Otolaryngology, Mount Sinai Hospital, Toronto, Ontario,3 University of Alberta Microfungus Collection and Herbarium, Edmonton, Alberta, Canada,2 Centraalbureau voor Schimmelcultures, Utrecht, The Netherlands4

Received 18 March 2003/ Returned for modification 18 July 2003/ Accepted 20 August 2003

We describe allergic fungal sinusitis caused by Trichoderma longibrachiatum in a patient with a history of atopy and asthma. A Gram stain of a sinus biopsy specimen was initially thought to contain yeast cells, but when Trichoderma was recovered in culture, these cells were subsequently recognized as chlamydospores. The patient was successfully managed with a combination of sinus lavage, oral corticosteroids, itraconazole, and allergen immunotherapy. This case also points out that careful scrutiny of direct smears is required to ensure that fungal structures are not misinterpreted.

* Corresponding author. Mailing address: Department of Microbiology, Mount Sinai Hospital, 600 University Ave., Toronto, Ontario, Canada M5G 1X5. Phone: (416) 586-4695. Fax: (416) 586-8746. E-mail: tmazzulli{at}mtsinai.on.ca.

Journal of Clinical Microbiology, November 2003, p. 5333-5336, Vol. 41, No. 11
0095-1137/03/$08.00+0     DOI: 10.1128/JCM.41.11.5333-5336.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.



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