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KMID : 1145920220270040082
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Journal of Mycology and Infection
2022 Volume.27 No. 4 p.82 ~ p.84
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Two Cases of Single-fingernail Fungal Leukonychia with Varying Manifestations
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Lee Su-Min
Yun Sook-Jung
Lee Jee-Bum
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Abstract
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Leukonychia is the white discoloration of the nail, and it is a common chromatic abnormality of the nail. Leukonychia can be caused by various systemic conditions; however, a fungal infection is also a probable cause. Herein, we report two cases that presented with varying patterns of single-nail leukonychia and were diagnosed with fungal leukonychia based on potassium hydroxide (KOH) examination and fungal culture. A 59-year-old man presented with asymptomatic complete whitish discoloration of the right fourth fingernail. KOH examination revealed many septate hyphae, and Trichophyton rubrum was identified through fungal culture and 18S rRNA sequencing. A 32-year-old man presented with asymptomatic longitudinal ridges and pitting with partial whitish discoloration of the second left fingernail persistent for 5 years. KOH examination revealed many short hyphae, and Scedosporium species was identified on fungal culture.
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KEYWORD
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Finger nail, Fungal leukonychia, Scedosporium, Trichophyton rubrum
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