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Journal of Clinical Microbiology, September 1998, p. 2763-2765, Vol. 36, No. 9
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

Phaeohyphomycosis Caused by Phaeoacremonium inflatipes

Arvind A. Padhye,1,* Miriam S. Davis,2 Dale Baer,2 Anne Reddick,2 Kaushal K. Sinha,3 and Juliana Ott3

Mycotic Diseases Branch, Division of Bacterial and Mycotic Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 303331; South Carolina Department of Health and Environmental Control, Columbia, South Carolina 292022; and Lexington Medical Center, West Columbia, South Carolina 291693

Received 2 March 1998/Returned for modification 8 April 1998/Accepted 1 June 1998

Phaeoacremonium inflatipes, one of three species previously classified as strains of Phialophora parasitica, was identified as the causal agent of a subcutaneous infection of the left foot of an 83-year-old woman from South Carolina. The patient had a granulomatous growth over the anteromedial aspect of her left foot. It was surgically excised, which led to complete healing without complications. Tissue sections of the excised mass stained with hematoxylin and eosin and Gomori's methenamine silver strains showed many septate hyphal elements of various lengths, some exhibiting brownish pigment in the cell walls of the hyphae. Portions of the tissue, when cultured, yielded many colonies which were initially glabrous, off white becoming velvety, greyish brown on aging. Microscopically, their hyphae were septate, branched, and phaeoid and bore lateral and terminal, erect, septate conidiophores. The conidiogenous cells (phialides) were terminal or lateral, mostly monophialidic, subcylindrical to spinelike in shape, and constricted at their bases and bore funnel-shaped, inconspicuous collarettes at their tips. The conidia were subhyaline, oblong, and ellipsoid to allantoid.

* Corresponding author. Mailing address: Fungus Reference Laboratory, Mail Stop G-11, Centers for Disease Control and Prevention, Atlanta, GA 30333. Phone: (404) 639-3749. Fax: (404) 639-3546. E-mail: AAP1{at}cdc.gov.

Journal of Clinical Microbiology, September 1998, p. 2763-2765, Vol. 36, No. 9
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.


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