Mostrando entradas con la etiqueta lentigo. Mostrar todas las entradas
Mostrando entradas con la etiqueta lentigo. Mostrar todas las entradas

lunes, 17 de diciembre de 2018

Aumento de la incidencia de léntigo maligno y melanoma léntigo maligno en Cataluña.

Matas-Nadal C  Malvehy J Ferreres JR Boada A Bodet D Segura S Salleras M Azon A Bel-Pla S Bigata XCampoy A Curcó N Dalmau J Formigon M Gonzalez A Just M Llistosella ENogues ME Pedragosa R Pujol JA Sabat M Smandia JA Zaballos PPuig SMartí RM .



Resumen



FONDO:

Recientes estudios epidemiológicos sugieren que los datos anteriores en los que el melanoma de diseminación superficial fue con mucho el subtipo más común de melanoma pueden no reflejar los patrones actuales de exposición al sol u otros factores de riesgo más involucrados en otros subtipos de melanoma como lentigo maligno (LM) o lentigo maligno melanoma ( LMM).

MÉTODOS:

Para medir la situación actual en nuestro país, se registraron todos los casos de LM y LMM diagnosticados en 23 hospitales de Cataluña, desde el 2000 al 2007.

RESULTADOS:

Aunque para el período global, LM / LMM representó solo el 8,4% de los casos, se observó una tendencia creciente en este porcentaje durante todo el período del estudio (del 6,9% [27 casos] en 2000 al 13,1% [94 casos] en 2007). Además, se observó una incidencia creciente de LM / LMM, especialmente en áreas con exposición crónica al sol (85.5% que involucra la región de la cabeza y el cuello). Durante los 8 años del registro, el grosor medio de Breslow de LMM se mantuvo estable. Sin embargo, el aumento en el número de casos de LM (in situ) fue significativamente mayor que el aumento de los invasores.

CONCLUSIONES:

Una observación importante a partir de estos datos es que el envejecimiento de la población y los patrones actuales de exposición al sol podrían seguir aumentando la incidencia de LM / LMM, que puede convertirse en un importante problema de salud pública, sobre los otros subtipos histológicos. Para establecer medidas preventivas primarias o secundarias para la población de riesgo LM / LMM, es imperativo resaltar la importancia del daño solar crónico como factor de riesgo de melanoma, y ​​no solo de quemaduras solares, que se aborda con mayor frecuencia en las campañas de prevención del melanoma.

Fuente: PubMed

Increasing incidence of lentigo maligna and lentigo maligna melanoma in Catalonia


Abstract

BACKGROUND:

Recent epidemiological studies suggest that past data where superficial spreading melanoma was by far the most common subtype of melanoma may not reflect current patterns of sun exposure or other risk factors more involved in other subtypes of melanoma as lentigo maligna (LM) or lentigo maligna melanoma (LMM).

METHODS:

In order to measure the current situation in our country, all cases of LM and LMM diagnosed in 23 hospitals in Catalonia, from 2000 to 2007, were recorded.

RESULTS:

Although for the global period LM/LMM represented only 8.4% of cases, an increasing trend in this percentage was observed throughout the study period (from 6.9% [27 cases] in 2000 to 13.1% [94 cases] in 2007). Also, an increasing incidence of LM/LMM was observed, especially in chronically sun-exposed areas (85.5% involving the head and neck region). During the 8 years of the registry, the mean Breslow thickness of LMM remained stable. However, the increase in the number of LM (in situ) cases was significantly higher than the increase of the invasive ones.

CONCLUSIONS:

An important observation from this data is that aging of population and current sun exposure patterns could keep increasing the incidence of LM/LMM, which may become an important public healthcare problem, over the other histological subtypes. In order to establish primary or secondary preventive measures to the LM/LMM risk-population, it is imperative to highlight the importance of chronic sun damage as a melanoma risk factor, and not only sunburn, most commonly addressed in melanoma prevention campaigns.

jueves, 1 de febrero de 2018

Dermoscopy versus reflectance confocal microscopy for the diagnosis of lentigo maligna

PubMed

Dermoscopy versus reflectance confocal microscopy for the diagnosis of lentigo maligna

BACKGROUND:
Several dermoscopic and in vivo reflectance confocal microscopy (RCM) diagnostic criteria of lentigo maligna (LM)/lentigo maligna melanoma (LMM) have been identified. However, no study compared the diagnostic accuracy of these techniques.

OBJECTIVE:

We evaluated the diagnostic accuracy of dermoscopy and RCM for LM/LMM using a holistic assessment of the images.

METHODS:

223 facial lesions were evaluated by 21 experts. Diagnostic accuracy of the clinical, dermoscopic and RCM examination were compared. Inter-investigator variability and confidence level in the diagnosis were also evaluated.

RESULTS:

Overall diagnostic accuracy of the two imaging techniques was good (area under the curve of the sROC function: 0.89). RCM was more sensitive (80%, versus 61%) and less specific (81% versus 92%) than dermoscopy for LM/LMM. In particular RCM showed a higher sensitivity for hypomelanotic and recurrent LM/LMM. RCM had a higher inter-investigator agreement and a higher confidence level in the diagnosis than dermoscopy.

CONCLUSION:

RCM and dermoscopy are both useful techniques for the diagnosis of facial lesions and in particular LM/LMM. RCM is particularly suitable for the identification of hypomelanotic and recurrent LM/LMM. This article is protected by copyright. All rights reserved.

https://www.ncbi.nlm.nih.gov/pubmed/29341263

 
#confocal #cristinacarrera #josepmalvehy #susanapuig #skincancer #invivo #confocalinvivo #cutaneousmelanoma #lentigo #reflactanceconfocal #cedilp #pubmed #microscopy

 

viernes, 19 de enero de 2018

Seven Non-melanoma Features to Rule Out Facial Melanoma.

Seven Non-melanoma Features to Rule Out Facial Melanoma.

https://www.ncbi.nlm.nih.gov/pubmed/28761960

Abstract

Facial melanoma is difficult to diagnose and dermatoscopic features are often subtle. Dermatoscopic non-melanoma patterns may have a comparable diagnostic value. In this pilot study, facial lesions were collected retrospectively, resulting in a case set of 339 melanomas and 308 non-melanomas. Lesions were evaluated for the prevalence (> 50% of lesional surface) of 7 dermatoscopic non-melanoma features: scales, white follicles, erythema/reticular vessels, reticular and/or curved lines/fingerprints, structureless brown colour, sharp demarcation, and classic criteria of seborrhoeic keratosis. Melanomas had a lower number of non-melanoma patterns (p< 0.001). Scoring a lesion suspicious when no prevalent non-melanoma pattern is found resulted in a sensitivity of 88.5% and a specificity of 66.9% for the diagnosis of melanoma. Specificity was higher for solar lentigo (78.8%) and seborrhoeic keratosis (74.3%) and lower for actinic keratosis (61.4%) and lichenoid keratosis (25.6%). Evaluation of prevalent non-melanoma patterns can provide slightly lower sensitivity and higher specificity in detecting facial melanoma compared with already known malignant features.

#melanoma #malvehy #skincancer #dermatologobarcelona #cedilp #susanapuig #melanomas #dermatoscopic #diagnosisofmelanoma #lentigo