| RRC ID |
84238
|
| Author |
Saikawa M, Kimura U, Ikari Y, Miyata A, Kaneko T, Hiruma M, Yaguchi T, Tanaka M, Takamori K, Suga Y.
|
| Title |
Dermoscopic Examination of Tinea Nigra on the Plantar Foot Unveils a Parallel Ridge Pattern Mimicking Acral-Lentiginous Melanoma.
|
| Journal |
Med Mycol J
|
| Abstract |
A man in his thirties patient visited his previous physician with the chief complaint of a pigmented macule on the sole of his left foot that had steadily grown over the past two years. A dermoscopic examination of the lesion showed a parallel ridge pattern (PRP); therefore, acral-lentiginous melanoma (ALM) was suspected, and the patient was referred to our hospital for a more detailed examination. On closer inspection, PRP had a well-defined and irregular border with no variation in color, which is atypical for ALM which is characterized by asymmetrical structure and variation in colors. Therefore, a skin biopsy was performed for a definite diagnosis, and the histopathological findings showed mycelia in the horny layers. Fungal culture revealed Hortaea werneckii, and the patient was diagnosed with tinea nigra (TN). Although TN is a rare fungal infection in Japan, we emphasize that this fungal infection should be noted as a mimic of ALM and should be considered when PRP is detected on the palms and soles by dermoscopic examination.
|
| Volume |
65(4)
|
| Pages |
103-106
|
| Published |
2024-1-1
|
| DOI |
10.3314/mmj.24-00010
|
| PMID |
39617457
|
| MeSH |
Adult
Ascomycota / isolation & purification
Biopsy
Dermoscopy*
Diagnosis, Differential
Foot / diagnostic imaging
Foot / microbiology
Foot / pathology
Humans
Japan
Male
Melanoma* / pathology
Skin Neoplasms / microbiology
Skin Neoplasms / pathology
Tinea* / diagnosis
Tinea* / microbiology
Tinea* / pathology
|
| Resource |
| Pathogenic eukaryotic microorganisms |
Hortaea werneckii IFM 68234 |
