RESUMEN
Although zoophilic dermatophytes remain the predominant cause of tinea capitis in Spain, an increase due to anthropophilic species has been reported. We report a retrospective observational study that included twenty-four children, who were diagnosed with tinea capitis due to anthropophilic species between 2004 and 2019. 75% of the patients were males with a mean age of 4,88 years. We observed 83,3% of cases from Africa, 4,2% from South America and 12,5% from Spain. Clinically, 70,8% of the patients presented scaly patches and non-scaring alopecia. Trichophyton soudanense was the main dermatophyte of the series (45,8%), followed by Microsporum audouinii (20,8%), Trichophyton tonsurans (12,5%) and Trichophyton violaceum (12,5%). Although this pattern of infection appears to be linked to immigration from Africa, we saw three native cases. The easier transmission of anthropophilic rather than zoophilic dermatophytes could predict a rise in the incidence of tinea capitis and a public health problem.
RESUMEN
Although zoophilic dermatophytes remain the predominant cause of tinea capitis in Spain, an increase due to anthropophilic species has been reported. We report a retrospective observational study that included 24 children, who were diagnosed with tinea capitis due to anthropophilic species between 2004 and 2019. 75% of the patients were males with a mean age of 4,88 years. We observed 83,3% of cases from Africa, 4,2% from South America and 12,5% from Spain. Clinically, 70,8% of the patients presented scaly patches and non-scaring alopecia. Trichophyton soudanense was the main dermatophyte of the series (45,8%), followed by Microsporum audouinii (20,8%), Trichophyton tonsurans (12,5%) and Trichophyton violaceum (12,5%). Although this pattern of infection appears to be linked to immigration from Africa, we saw three native cases. The easier transmission of anthropophilic rather than zoophilic dermatophytes could predict a rise in the incidence of tinea capitis and a public health problem.
RESUMEN
The relation between atypical fibroxanthoma and pleomorphic dermal sarcoma has led to confusion and debate in the literature. Both tumors present on sun-exposed skin, typically on the head and neck, in patients of advanced age. Both are comprised of a variable mix of histiocytoid, spindle, epithelioid, and/or giant multinucleated cells with pleomorphic nuclei. No immunohistochemical diagnostic techniques have emerged to distinguish these tumors. Diagnosis is by exclusion. Histologically, atypical fibroxanthoma is seen as a well-circumscribed dermal nodule but there will be no evidence of extensive subcutaneous invasion, tumor necrosis, or lymphovascular or perineural invasion. Therefore, if any of the aforementioned features is present, the diagnosis would be pleomorphic dermal sarcoma. This narrative review of the literature aims to identify the distinguishing and overlapping histopathologic features of these 2 tumors as they have been described in case series.
Asunto(s)
Sarcoma , Neoplasias Cutáneas , Diagnóstico Diferencial , Humanos , Sarcoma/diagnóstico , Neoplasias Cutáneas/diagnósticoRESUMEN
This series of 2 articles on dermatopathologic diagnoses reviews conditions in which granulomas form. Part 1 clarifies concepts, discusses the presentation of different types of granulomas and giant cells, and considers a large variety of noninfectious diseases. Some granulomatous diseases have a metabolic origin, as in necrobiosis lipoidica. Others, such as granulomatous mycosis fungoides, are related to lymphomas. Still others, such as rosacea, are so common that dermatologists see them nearly daily in clinical practice.
RESUMEN
Part 2 of this series on granulomatous diseases focuses on skin biopsy findings. Whereas the first part treated noninfectious conditions (metabolic disorders and tumors, among other conditions), this part mainly deals with various types of infectious disease along with other conditions seen fairly often by clinical dermatologists.
RESUMEN
Although zoophilic dermatophytes remain the predominant cause of tinea capitis in Spain, an increase due to anthropophilic species has been reported. We report a retrospective observational study that included twenty-four children, who were diagnosed with tinea capitis due to anthropophilic species between 2004 and 2019. 75% of the patients were males with a mean age of 4,88 years. We observed 83,3% of cases from Africa, 4,2% from South America and 12,5% from Spain. Clinically, 70,8% of the patients presented scaly patches and non-scaring alopecia. Trichophyton soudanense was the main dermatophyte of the series (45,8%), followed by Microsporum audouinii (20,8%), Trichophyton tonsurans (12,5%) and Trichophyton violaceum (12,5%). Although this pattern of infection appears to be linked to immigration from Africa, we saw three native cases. The easier transmission of anthropophilic rather than zoophilic dermatophytes could predict a rise in the incidence of tinea capitis and a public health problem (AU)
Aunque los dermatofitos zoófilos son aparentemente aún la causa principal de tinea capitis en España, se está observando un repunte por especies antropófilas. Presentamos un estudio observacional retrospectivo de veinticuatro niños con tinea capitis antropófila, diagnosticados en nuestro centro entre 2004 y 2019. El 75% de los pacientes fueron varones con una media de edad de 4,88 años. El 83,3% eran africanos, el 4,2% de América del Sur y el 12,5% de España. Clínicamente, en el 70,8% de los casos se observaron parches descamativos con alopecia no cicatricial. Trichophyton soudanense fue el dermatofito más aislado (45,8%), seguido de Microsporum audouinii (20,8%), Trichophyton tonsurans (12,5%) y Trichophyton violaceum (12,5%). Aunque este patrón parece estar relacionado con la inmigración africana, observamos 3 casos nativos. La facilidad de transmisión de los dermatofitos antropófilos permite predecir un aumento en la incidencia de la tinea capitis y un potencial problema de salud pública (AU)
Asunto(s)
Humanos , Masculino , Femenino , Lactante , Preescolar , Niño , Tiña del Cuero Cabelludo/epidemiología , Estudios Retrospectivos , España/epidemiología , IncidenciaRESUMEN
Aunque los dermatofitos zoófilos son aparentemente aún la causa principal de tinea capitis en España, se está observando un repunte por especies antropófilas. Presentamos un estudio observacional retrospectivo de veinticuatro niños con tinea capitis antropófila, diagnosticados en nuestro centro entre 2004 y 2019. El 75% de los pacientes fueron varones con una media de edad de 4,88 años. El 83,3% eran africanos, el 4,2% de América del Sur y el 12,5% de España. Clínicamente, en el 70,8% de los casos se observaron parches descamativos con alopecia no cicatricial. Trichophyton soudanense fue el dermatofito más aislado (45,8%), seguido de Microsporum audouinii (20,8%), Trichophyton tonsurans (12,5%) y Trichophyton violaceum (12,5%). Aunque este patrón parece estar relacionado con la inmigración africana, observamos 3 casos nativos. La facilidad de transmisión de los dermatofitos antropófilos permite predecir un aumento en la incidencia de la tinea capitis y un potencial problema de salud pública (AU)
Although zoophilic dermatophytes remain the predominant cause of tinea capitis in Spain, an increase due to anthropophilic species has been reported. We report a retrospective observational study that included twenty-four children, who were diagnosed with tinea capitis due to anthropophilic species between 2004 and 2019. 75% of the patients were males with a mean age of 4,88 years. We observed 83,3% of cases from Africa, 4,2% from South America and 12,5% from Spain. Clinically, 70,8% of the patients presented scaly patches and non-scaring alopecia. Trichophyton soudanense was the main dermatophyte of the series (45,8%), followed by Microsporum audouinii (20,8%), Trichophyton tonsurans (12,5%) and Trichophyton violaceum (12,5%). Although this pattern of infection appears to be linked to immigration from Africa, we saw three native cases. The easier transmission of anthropophilic rather than zoophilic dermatophytes could predict a rise in the incidence of tinea capitis and a public health problem (AU)
Asunto(s)
Humanos , Masculino , Femenino , Lactante , Preescolar , Niño , Tiña del Cuero Cabelludo/epidemiología , Estudios Retrospectivos , España/epidemiología , IncidenciaRESUMEN
La relación entre el fibroxantoma atípico (FXA) y el sarcoma pleomórfico dérmico (SPD) ha sido confusa y objeto de debate a lo largo de los años en la literatura científica. Son tumores que se presentan en pacientes de edad avanzada en piel fotoexpuesta, típicamente cabeza y el cuello. Están formados por una mezcla variable de células histiocitoides, fusiformes, epitelioides y gigantes multinucleadas con núcleos pleomórficos. No existen técnicas inmunohistoquímicas diagnósticas de estas entidades y su diagnóstico debe ser de exclusión. El FXA es una neoplasia dérmica, bien delimitada, con ausencia de infiltración difusa de tejido subcutáneo, necrosis tumoral o invasión linfovascular o perineural. Estando alguna de las características anteriores presente, debe hacerse el diagnóstico de SPD. En esta revisión narrativa de la literatura intentaremos determinar cuáles son las características histopatológicas precisas de ambas entidades, según las series publicadas en la literatura y aquellos aspectos que las diferencian o relacionan (AU)
The relation between atypical fibroxanthoma and pleomorphic dermal sarcoma has led to confusion and debate in the literature. Both tumors present on sun-exposed skin, typically on the head and neck, in patients of advanced age. Both are comprised of a variable mix of histiocytoid, spindle, epithelioid, and/or giant multinucleated cells with pleomorphic nuclei. No immunohistochemical diagnostic techniques have emerged to distinguish these tumors. Diagnosis is by exclusion. Histologically, atypical fibroxanthoma is seen as a well-circumscribed dermal nodule but there will be no evidence of extensive subcutaneous invasion, tumor necrosis, or lymphovascular or perineural invasion. Therefore, if any of the aforementioned features is present, the diagnosis would be pleomorphic dermal sarcoma. This narrative review of the literature aims to identify the distinguishing and overlapping histopathologic features of these 2 tumors as they have been described in case series (AU)
Asunto(s)
Humanos , Neoplasias Cutáneas/diagnóstico , Liposarcoma/diagnóstico , Diagnóstico Diferencial , Neoplasias Cutáneas/patología , Liposarcoma/patología , BiopsiaRESUMEN
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