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ResumenAntecedentesLos tumores cutáneos que se originan en el pabellón auricular son frecuentes en individuos con piel tipo 1 y fenotipos 1 y 2; estos están asociados a la insolación crónica o intermitente, pero intensa. El tumor maligno más frecuente es el carcinoma basocelular, seguido del epidermoide y del melanoma. Suelen diagnosticarse en etapas tardías y tener mal pronóstico.Material y métodosEstudio transversal, con análisis retrospectivo de la base de datos de pacientes con cáncer de piel, que fueron tratados entre 2011 y 2014. Se incluyen los pacientes con tumor en el pabellón auricular. Se evaluó: tipo histológico, etapa, tasa de metástasis clínicas y ocultas, y tasa de recurrencia locorregional.ResultadosIncluimos 42 pacientes con 25 carcinomas epidermoides, 11 basocelulares y 6 melanomas invasores. La tasa de metástasis ganglionares en pacientes con carcinoma epidermoide fue 32%, la mayoría en la parótida y la región periparotídea; 7% con rotura capsular, 2/17 se etapificaron como cN0, tuvieron metástasis ocultas (11.7%). Todos los pacientes cN+ fueron clasificados como T2, con ulceración. Ninguno de los pacientes con carcinoma basocelular tuvo metástasis ganglionares.Todos los melanomas fueron de tipo de extensión superficial, con media de Breslow de 3mm, y a todos se les realizó mapeo linfático y biopsia del ganglio centinela; solo uno tuvo metástasis en el ganglio centinela.ConclusiónEl tumor más frecuente en el pabellón auricular en la presente serie es el carcinoma epidermoide; la posibilidad de metástasis ganglionares se asocia al tamaño del tumor (T), la disección ganglionar debe de ser sistemática en pacientes con T2 o mayores.AbstractBackgroundSkin tumours that originate in the external ear are common in individuals with type 1 skin and phenotype 1 and 2. The skin cancer is associated with chronic or intermittent, but intense sunlight. The most common malignant tumour is basal cell carcinoma, followed by squamous cell carcinoma and melanoma. The diagnosis of squamous cell skin cancer in head and neck area is usually made in the advanced stages and has a poor prognosis.Material and methodsA cross-sectional, retrospective analysis was performed on the database of patients with skin cancer of the external ear treated between 2011 and 2014. Histology type, stage, rate of clinical and occult metastases, and rate of loco-regional recurrence were evaluated.ResultsOf the 42 patients included there were, 25 squamous cell carcinomas, 11 basal cell carcinomas, and 6 invasive melanomas. The rate of lymph node metastases in patients with squamous cell carcinoma was 32%, mostly in the parotid and peri-parotid region, 7% of them with capsular rupture, 2/17 were staged as cN0, and 11.7% had occult metastases. All patients with nodal metastasis were classified as T2 with ulceration.None of the patients with basal cell carcinoma had lymph node metastases.All melanomas were superficial extension type with mean level of Breslow of 3 mm. All underwent lymphatic mapping and sentinel node biopsy, with only one having metastases in the sentinel node.ConclusionThe most frequent tumour in the external ear in this series was squamous cell carcinoma. The possibility of lymph node metastases is associated with tumour size (T). Node dissection should be systematic in patients with T2 or greater.

ResumenAntecedentesLa mortalidad del melanoma cutáneo no ha disminuido en los últimos 50 años. Las únicas medidas que permiten reducirla son la prevención primaria y el diagnóstico oportuno; la evaluación dermatoscópica es fundamental para lograrlo. Permite identificar características del melanoma que pasarían desapercibidas al ojo desnudo.El objetivo es reportar los hallazgos dermatoscópicos más frecuentes en pacientes con diagnóstico de melanoma in situ e invasivo.Material y métodosEstudio observacional, retrospectivo en el que se realizó dermatoscopia de contacto utilizando dermatoscopio LED DermliteMR, y cámara fotográfica DermliteMR. Se evaluó asimetría en 2 ejes, asociación de colores, falta de pigmento, puntos irregulares, red atípica, pseudópodos, velo azul, ulceración y anillo rosa perilesional, y se comparó el diagnóstico histológico con los hallazgos dermatoscópicos.ResultadosFueron 65 pacientes con melanoma cutáneo: 10 in situ y 55 invasivos. La media de Breslow en invasivos fue 3mm. La mayoría de los pacientes (35) tuvieron localización en extremidades. El hallazgo dermatoscópico más frecuente fue asimetría en 2 ejes, seguida de asociación de 2 o más colores; en melanoma in situ el hallazgo más habitual fue la asimetría en 2 ejes seguida de los puntos atípicos; en melanoma invasivo la asimetría en 2 ejes, la asociación de 2 colores o más y los pseudópodos fueron los hallazgos más frecuentes.ConclusiónLa asimetría en 2 ejes es el hallazgo dermatoscópico más frecuente en melanoma ya sea in situ o invasivo; la presencia de 2 colores o más en una lesión pigmentada debe hacer sospechar de un melanoma invasivo.AbstractBackgroundThe mortality of cutaneous melanoma has not declined over the past 50 years. The only interventions that can reduce mortality are primary prevention and early diagnosis, and the dermoscopic evaluation is essential to achieve this. Dermoscopy identifies characteristics of melanoma that would go unnoticed to the naked eye.The aim of this paper is to report the most frequent dermoscopic findings in patients diagnosed with in situ and invasive melanoma.Material and methodsAn observational and retrospective study of contact dermoscopy was performed using LED DermliteTM and camera DermliteTM dermoscope. The findings evaluated were: asymmetry in two axes, association of colours, lack of pigment, irregular points, atypical network, pseudopods, blue veil, ulceration, and peri-lesional pink ring. These dermoscopic findings were compared with the histological diagnosis.ResultsThe study included 65 patients with cutaneous melanoma; 10 in situ, and 55 invasive. The mean Breslow in invasive melanoma was 3 mm. Most patients (35) had localization in extremities. In all patients, the most frequent dermoscopic finding was asymmetry in two axes, followed by association of two or more colours; in melanoma in situ, asymmetry was the most frequent, followed by atypical-irregular points. In invasive melanoma asymmetry in two axes, the association of two or more colours, and pseudopods, were the most frequent findings.ConclusionAsymmetry in two axes is the most common dermoscopic finding in in situ and invasive melanoma. The presence of two or more colours in a pigmented lesion should be suspected in an invasive melanoma.

Background Skin tumours that originate in the external ear are common in individuals with type 1 skin and phenotype 1 and 2. The skin cancer is associated with chronic or intermittent, but intense sunlight. The most common malignant tumour is basal cell carcinoma, followed by squamous cell carcinoma and melanoma. The diagnosis of squamous cell skin cancer in head and neck area is usually made in the advanced stages and has a poor prognosis. Material and methods A cross-sectional, retrospective analysis was performed on the database of patients with skin cancer of the external ear treated between 2011 and 2014. Histology type, stage, rate of clinical and occult metastases, and rate of loco-regional recurrence were evaluated. Results Of the 42 patients included there were, 25 squamous cell carcinomas, 11 basal cell carcinomas, and 6 invasive melanomas. The rate of lymph node metastases in patients with squamous cell carcinoma was 32%, mostly in the parotid and peri-parotid region, 7% of them with capsular rupture, 2/17 were staged as cN0, and 11.7% had occult metastases. All patients with nodal metastasis were classified as T2 with ulceration. None of the patients with basal cell carcinoma had lymph node metastases. All melanomas were superficial extension type with mean level of Breslow of 3 mm. All underwent lymphatic mapping and sentinel node biopsy, with only one having metastases in the sentinel node. Conclusion The most frequent tumour in the external ear in this series was squamous cell carcinoma. The possibility of lymph node metastases is associated with tumour size (T). Node dissection should be systematic in patients with T2 or greater.

Background The mortality of cutaneous melanoma has not declined over the past 50 years. The only interventions that can reduce mortality are primary prevention and early diagnosis, and the dermoscopic evaluation is essential to achieve this. Dermoscopy identifies characteristics of melanoma that would go unnoticed to the naked eye. The aim of this paper is to report the most frequent dermoscopic findings in patients diagnosed with in situ and invasive melanoma. Material and methods An observational and retrospective study of contact dermoscopy was performed using LED Dermlite™ and camera Dermlite™ dermoscope. The findings evaluated were: asymmetry in two axes, association of colours, lack of pigment, irregular points, atypical network, pseudopods, blue veil, ulceration, and peri-lesional pink ring. These dermoscopic findings were compared with the histological diagnosis. Results The study included 65 patients with cutaneous melanoma; 10 in situ , and 55 invasive. The mean Breslow in invasive melanoma was 3 mm. Most patients (35) had localisation in extremities. In all patients, the most frequent dermoscopic finding was asymmetry in two axes, followed by association of two or more colours; in melanoma in situ , asymmetry was the most frequent, followed by atypical-irregular points. In invasive melanoma asymmetry in two axes, the association of two or more colours, and pseudopods, were the most frequent findings. Conclusion Asymmetry in two axes is the most common dermoscopic finding in in situ and invasive melanoma. The presence of two or more colours in a pigmented lesion should be suspected in an invasive melanoma.