RESUMO
BACKGROUND: Malignant melanoma is a well-known and commonly lethal tumour yet there exists scarce published information available from Saudi Arabia. MATERIALS AND METHODS: This study examined the demographic, clinical, and histopathological profile of melanoma in a sample of Saudi patients over a period of 13 years. Medical records of 98 patients from 2004 to 2016 were retrieved from the Department of Pathology and Laboratory Medicine at King Faisal Specialist Hospital (KFSH), Riyadh, Saudi Arabia. RESULTS: Forty two males and fifty six females (median age of 58 years) were analysed. Most cases were diagnosed in patients aged 50 years or above. The most common sites of occurrence were the extremities, especially the feet, followed by the head and neck, and then mucosal regions. Most mucosal melanomas were located in the mouth. The most common histopathological form was nodular melanoma (38 cases) followed by acral lentiginous melanoma (27 cases). Most of the cases were diagnosed in late diagnostic stages III and IV (59 cases) and most had higher Clark's level and stage V Breslow thickness. The cases with preceding history of xeroderma pigmentosum and dysplastic nevi tended to be diagnosed earlier. The most common mode of treatment was surgical resection. Patients on palliative treatment were older. Only 27/40 patients were confirmed to be alive and the rest were lost to follow-up. CONCLUSION: Our data contrast with previously published studies from other parts of the world. Further work is needed to confirm our findings of female preponderance, common histological subtypes of nodular and acral melanomas, and the high involvement of oral mucosa in our Saudi patients.
Assuntos
Melanoma/patologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Melanoma/epidemiologia , Melanoma/terapia , Pessoa de Meia-Idade , Estudos Retrospectivos , Arábia Saudita/epidemiologia , Centros de Atenção Terciária , Adulto JovemRESUMO
El granuloma anular es una enfermedad granulomatosa benigna con diferentes manifestaciones clínicas que incluye la forma localizada, generalizada, perforante, subcutánea, en parche, papular y lineal. El granuloma anular papular umbilicado es considerado una variante de la forma papular y en la literatura anglosajona se han reportado muy pocos casos. Se presenta el caso de un adolescente con pápulas eucrómicas asintomáticas en el dorso de las manos desde la infancia. La biopsia sugirió liquen nitidus, posteriormente la correlación clínico-patológica permitió hacer diagnóstico de granuloma anular papular umbilicado. Se resalta la importancia de este diagnóstico diferencial y la cronicidad de las lesiones.
The granuloma annulare is a benign granulomatous disease with different clinical manifestations including, localized, generalized, perforating, subcutaneous, patch type, papular and linear types. Papular umbilicated granuloma annulare is considered to be a variant of the papular type and in the Anglo-Saxon literature very few cases have been reported. We describe the case of an adolescent with asymptomatic skin colored papules on the dorsal aspect of the hands since infancy. The biopsy suggested lichen nitidus and after the clinicopathological correlation the diagnosis of papular umbilicated granuloma annulare was made. We highlight the importance of this differential diagnosis and the chronicity of the lesions.
O granuloma anular é uma doença granulomatosa benigna com diferentes manifestações clínicas que inclui a forma localizada, generalizada, perfurante, subcutânea, em parche, papular e linear. O granuloma anular papular umbilicado é considerado uma variante da forma papular e na literatura anglo-saxã foram relatados muito poucos casos. Apresenta-se o caso de um adolescente com pápulas acrômicas assintomáticas no dorso das mãos desde a infância. A biopsia sugeriu líquen nitidus, posteriormente a correlação clínico-patológica permitiu fazer diagnóstico de granuloma anular papular umbilicado. Destaca-se a importância deste diagnóstico diferencial e a cronicidade das lesões.