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The Identification of an Uncommon Dermatophyte as an Agent of Tinea Corporis, Microsporum Ferrugineum

Authors: 
Iman Qoraan, Yasemin Öz, Işıl Bulur
Report Number: 
39
Affiliation: 
Eskisehir Osmangazi University Faculty of Medicine, Department of Microbiology, Eskisehir, Türkiye
Journal Name: 
Osmangazi Journal of Medicine
Date: 
Tuesday, November 15, 2016
Topics: 
Identification of uncommon dermatophyte
Abstract: 
A case of 29 years old female who admitted to Eskisehir Osmangazi University Hospital of Medical Faculty, Dermatology Clinic because of ringworm skin rashes resembling tinea corporis has been represented in this paper. Hyaline septate branching hyphae were seen in microscopic examination of skin scrapping specimens and the agent grown on Sabouraud dextrose agar (SDA) and mycobiotic agar including cycloheximide and chloramphenicol after four weeks. Based on its microscopic characteristics and the results of several phenotypic tests such as frequent reflexive hyphae formation on corn meal tween 80 agar, yellow pigment production on Lowenstein Jensen agar, positive urease test in Christensen urea broth and failure to grow at 37ºC on SDA, the isolate was identified as Microsporum ferrugineum which share similar macroscopic characteristics with dysgonic strains of other dermatophytes. Topical sertaconazole nitrate implementation was started for treatment and clinical and mycological response was observed after one month.