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조갑진균증의 진단에 있어 KOH 검사, 진균 배양 검사, 병리 조직 검사 및중합효소 연쇄반응의 비교

A Comparative Study of KOH Preparation, Fungal Culture,Histopathologic Examination and Polymerase ChainReaction for Diagnosis in Onychomycosis

신동훈|김기홍|최종수|김극준|신영민
대한의진균학회 (The Korean Society for Medical Mycology)|2007.06|대한의진균학회지 (Journal of Mycology and Infection)|제12권 제2호|pp. 59-69

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참고문헌

키워드

OnychomycosisPolymerase chain reactionHistopathologic examination
주제분류미생물학

초록

Background: Onychomycosis is one of the most common nail disorders, and it is necessary of mycologic confirmation to treat correctly. It has been reported that histopathologic evaluation and polymerase chain reaction (PCR) of the nail plate by nail clipping might be a useful supportive method for identification of causative fungi showing higher detection rates. Objective: This study was designed to compare diagnostic efficacy of KOH preparation, fungal culture, histopathologic examination and PCR in onychomycosis. Methods: Using 60 nail samples from 60 patients with clinically suspected onychomycosis, KOH preparation and fungal culture with nail and subungual tissue was performed. And histopathologic examination with PAS staining and PCR with DNA extracted from paraffin block was performed. Results: The results are summarized as follows: 1. The positive rates of conventional KOH preparation, fungal culture, histopathologic examination and PCR were 87.5%, 8.9%, 87.5% and 83.9%. 2. In histopathologic examination, fungi were distinguished as 3 groups based on Kim and Cho's classification (1997): dermatophytes, Candida sp. and non-dermatophytic mold (NDM). Fifteen of 49 samples are dermatophytes, 1 is Candida sp., and 7 are NDM, 8 are dermatophytes and Candida sp. mixed infections, 18 are dermatophytes and NDM mixed infections. 3. In PCR, 1 of 47 samples is Trichophyton rubrum, 4 are Candida sp. and 39 samples are NDM. Conclusion: Histopathologic examination in onychomycosis is considered to be an useful supportive method in diagnosis and identification of causative fungi in onychomycosis.

Abstract

Background: Onychomycosis is one of the most common nail disorders, and it is necessary of mycologic confirmation to treat correctly. It has been reported that histopathologic evaluation and polymerase chain reaction (PCR) of the nail plate by nail clipping might be a useful supportive method for identification of causative fungi showing higher detection rates. Objective: This study was designed to compare diagnostic efficacy of KOH preparation, fungal culture, histopathologic examination and PCR in onychomycosis. Methods: Using 60 nail samples from 60 patients with clinically suspected onychomycosis, KOH preparation and fungal culture with nail and subungual tissue was performed. And histopathologic examination with PAS staining and PCR with DNA extracted from paraffin block was performed. Results: The results are summarized as follows: 1. The positive rates of conventional KOH preparation, fungal culture, histopathologic examination and PCR were 87.5%, 8.9%, 87.5% and 83.9%. 2. In histopathologic examination, fungi were distinguished as 3 groups based on Kim and Cho's classification (1997): dermatophytes, Candida sp. and non-dermatophytic mold (NDM). Fifteen of 49 samples are dermatophytes, 1 is Candida sp., and 7 are NDM, 8 are dermatophytes and Candida sp. mixed infections, 18 are dermatophytes and NDM mixed infections. 3. In PCR, 1 of 47 samples is Trichophyton rubrum, 4 are Candida sp. and 39 samples are NDM. Conclusion: Histopathologic examination in onychomycosis is considered to be an useful supportive method in diagnosis and identification of causative fungi in onychomycosis.

참고문헌 (28)

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