ABSTRACT
Abstract Superficial mycoses are fungal infections restricted to the stratum corneum and to the hair shafts, with no penetration in the epidermis; they are: white piedra, black piedra, tinea versicolor, and tinea nigra. This study presents images of mycological tests performed in the laboratory, as well as exams performed at the authors office, in order to improve the dermatologist's knowledge about the diagnosis of these dermatoses, which are common in many countries.
Subject(s)
Humans , Piedra/diagnosis , Tinea/diagnosis , Piedra/classification , Piedra/pathology , Tinea/classification , Tinea/pathologyABSTRACT
La verrugosis generalizada es un rasgo común a diferentes síndromes de inmunodeficiencia, cuyo prototipo es la epidermodisplasia verruciforme (EV). Se presenta una paciente con síndrome WILD (Warts, Immunodeficiency, Lymphoedema, anogenital Dysplasia), que consultó por verrugas profusas, con displasia genital y linfedema. La presencia de DNA para los papilomavirus de los grupos I y II se reveló con hibridización molecular por captura híbrida en microplaca para detección del DNA de HPV de lesiones de cuello uterino. La inmunofenotipificación en sangre periférica demostró población linfoide con moderado aumento de poblaciones NK y TNK, sin evidencia inmunofenotípica de población B clonal. Las verrugas planas mejoraron con retinoides sistémicos e imiquimod tópico. La displasia genital desapareció luego de la vacunación para HPV con vacuna cuadrivalente (AU)
Generalized verrucosis is a common characteristic of several immunodeficiency disorders whose prototype is the epidermodysplasia verruciformis. We report a patient with WILD SYNDROME (Warts, Immunodeficiency, Lymphoedema and anogenital Dysplasia) who consulted for profuse warts, genital dysplasia and limphoedema. The presence of DNA from papillomavirus groups I and II was revealed by molecular hybridization with hybrid capture in microplate for HPV DNA detection of uterine cervical lesions. Immunophenotyping in peripheral blood showed lymphoid population with moderate increase in NK and TNK populations without immunophenotypic evidence of clonal B population. Flat warts improved with systemic retinoids and topical imiquimod. The genital dysplasia disappeared after vaccination with quadrivalent HPV vaccine (AU)
Subject(s)
Humans , Male , Adult , Piedra/diagnosis , Trichosporon , Axilla/microbiology , InfectionsABSTRACT
INTRODUCTION: White piedra is a superficial mycosis caused by the genus Trichosporon and characterized by nodules on hair shaft. METHODS: The authors report a family referred to as pediculosis. Mycological culture on Mycosel® plus molecular identification was performed to precisely identify the etiology. RESULTS: A Trichosporon spp. infection was revealed. The molecular procedure identified the agent as Trichosporon inkin. CONCLUSIONS: White piedra and infection caused by T. inkin are rarely reported in Southern Brazil. The molecular tools are essentials on identifying the Trichosporon species.
INTRODUÇÃO: Piedra branca é micose superficial causada por fungos do gênero Trichosporon e caracterizado por nódulos firmemente aderidos à haste do pêlo. MÉTODOS: Os autores relatam casos familiares encaminhados como pediculose. Foram utilizados cultura em ágar Mycosel® e identificação molecular. RESULTADOS: Exame micológico revelou a infecção por Trichosporon spp. A identificação molecular demonstrou se tratar do Trichosporon inkin. CONCLUSÕES: Piedra branca e infecção pelo T. inkin são raramente relatados na região sudeste do Brasil. A identificação molecular é essencial para correta determinação de espécies no gênero Trichosporon.
Subject(s)
Adult , Child , Child, Preschool , Female , Humans , Male , Piedra/diagnosis , Scalp Dermatoses/diagnosis , Scalp Dermatoses/microbiology , Trichosporon/genetics , Piedra/microbiology , Trichosporon/isolation & purification , Trichosporon/classificationABSTRACT
La piedra blanca es una micosis superficial causada por levaduras del género Trichosporon. Se manifiesta como una infección crónica y asintomática que afecta a los tallos pilosos y forma concreciones fúngicas en forma de nódulos, preferentemente en los pelos de axilas y pubis, aunque puede afectar también a la cabeza. Presentamos el caso de una niña de 9 años con afectación de los pelos de la cabeza.
The white stone is a superficial fungal infection caused by the yest Trichosporon sp. It clinically manifests as a chronic and asymptomatic infection that affects the hair shaft and forms nodules shaped fungal concretions, preferably in the axillae and pubis, but scalp hairs can also be affected. We presented the case of a 9-year- girl with affectation of the scalp hairs.
Subject(s)
Humans , Female , Child , Dermatomycoses , Piedra/diagnosis , Trichosporon , Diagnosis, DifferentialABSTRACT
White piedra is a superficial mycosis caused by Trichosporon spp. that affects the hair shaft of any part of the body. It is presented an outbreak of scalp white piedra seen in 5.8 percent of the children frequenting a day care in Northeastern of São Paulo State, Brazil. Mycological exam and culture identified T. cutaneum in all five cases, and scanning electron microscopy of nodules around hair shaft infected by Trichosporon spp. is demonstrated comparing them with those of black piedra and with nits of Pediculous capitis.
Piedra branca caracteriza-se por ser micose superficial, causada por Trichosporon spp., que compromete a haste dos pelos de qualquer região do corpo. Um surto de piedra branca, afetando os cabelos do couro cabeludo, foi registrado em 5,8 por cento das crianças que freqüentavam uma creche na região nordeste do estado de São Paulo. Exame micológico direto e cultura identificaram T. cutaneum nas cinco crianças afetadas. Enfatiza-se a utilização da microscopia eletrônica de varredura, que mostrou nódulos circundando a haste dos cabelos infectada por Trichosporon spp., comparando-os com nódulos de Piedra nigra e com lêndeas de Pediculus capitis.
Subject(s)
Child, Preschool , Female , Humans , Child Day Care Centers , Piedra/epidemiology , Scalp Dermatoses/epidemiology , Trichosporon/isolation & purification , Brazil/epidemiology , Disease Outbreaks , Microscopy, Electron, Scanning , Piedra/diagnosis , Piedra/microbiology , Scalp Dermatoses/diagnosis , Scalp Dermatoses/microbiology , Trichosporon/ultrastructureABSTRACT
The most common superficial mycosis caused by trichosporon beigelii is white piedra. We report a 18 years old male that had in several hairs of the scalp, white-yellowish nodules of 1 mm diameter, agglutinated or forming chains, even forming threads, with a greasy aspect. Trichosporon beiglii was identified in cultures. Oral and topical antimycotics were prescribed and the patient was lost from follow up
Subject(s)
Humans , Male , Adolescent , Piedra/diagnosis , Piedra/drug therapy , Trichosporon/pathogenicity , Fluconazole/administration & dosage , Itraconazole/administration & dosage , Hair Diseases/parasitology , Ketoconazole/administration & dosageABSTRACT
É feita uma revisäo sobre o tema Micoses Superficiais de modo a interessar a classe médica em geral, sobretudo ao näo-especialista. Recentes avanços nos campos da taxonomia, epidemiologia, imunologia e terapêutica säo apresentados
Subject(s)
Humans , Dermatomycoses , Candidiasis, Cutaneous/diagnosis , Candidiasis, Cutaneous/drug therapy , Dermatomycoses/diagnosis , Dermatomycoses/drug therapy , Dermatomycoses/etiology , Diagnosis, Differential , Piedra/diagnosis , Piedra/drug therapy , Tinea/diagnosis , Tinea/drug therapyABSTRACT
Se presenta un caso de piedra blanca en un hombre de 29 años, con localización en vello pubiano y piel anexa. Se recomienda mantener el criterio de su inclusión en el diagnóstico diferencial de patologías micóticas y parasitarias que afectan el tallo del pelo