Microscopically differentiating dermatophytes from sock fibers - 24/08/11
Abstract |
Background |
Dermatophytes are responsible for a number of superficial fungal infections that affect millions worldwide. During microscopic observation a potassium hydroxide (KOH) fungal smear, various filamentous materials such as common textile fibers from socks can obfuscate proper discernment of dermatophytes.
Objective |
To differentiate dermatophytes from 9 common sock fibers.
Methods |
Nine different textile fiber samples were microscopically analyzed by using a KOH direct smear test; their defining structural features were compared and contrasted with those of dermatophytes.
Results |
Although there are several similarities, sock fibers tend to have a non-septate, uniform structure which differentiates them from dermatophytes. Sock fibers are also significantly larger than dermatophytes and can be viewed better at lower magnifications.
Limitations |
There is a lack of sock samples with 100% textile fiber composition. Also, fibers were examined in a clean setting, without the detritus that normally accompanies dermatophytes in a clinical setting.
Conclusion |
While textile fibers may be present in KOH preparations, their general appearance typically differs from that of dermatophytes; an observer who is familiar with these distinctions will be able to differentiate between the two.
Le texte complet de cet article est disponible en PDF.Key words : dermatophyte, onychomycosis, sock fiber
Plan
Funding sources: None. |
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Conflicts of interest: None declared. |
Vol 61 - N° 6
P. 1024-1027 - décembre 2009 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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