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Revista Colombiana de Cancerología
Print version ISSN 0123-9015
Abstract
POZZOBON, Flavia; ACOSTA, Álvaro; CARRENO, Alexander and FIERRO, Eduardo. Characteristics of primary cutaneous melanoma in the Colombian National Cancerology Institute 2006-2010. rev.colomb.cancerol. [online]. 2013, vol.17, n.3, pp.111-118. ISSN 0123-9015.
Objectives: To describe the main characteristics of cutaneous melanoma in the National Cancerology Institute, a cancer reference center in Bogota, Colombia. Materials and methods: A descriptive, retrospective study was conducted on the demographic, clinical and histological characteristics of patients diagnosed with primary cutaneous melanoma in the National Cancerology Institute between 2006 and 2010. Results: A total of 599 patients were included, of whom 57.4% were females (n= 344) and 42.6% males (n=255). The mean age at diagnosis was 60.8 years. The majority of cases, 56.3% (n=329), were from Bogota. It was also the most common urban area where the patients had their usual residence (n=500). The mean annual frequency was 115 new cases per year. The most frequent location was acral, with 42.2% (n=253), followed by head and neck (n=186). In accordance with the location, the most common sub-type was acral lentiginous melanoma, with con 43.7% (n=262), followed by lentigo maligna, with 24% (n=144). As regards the depth, a similar frequency was observed for melanomas in situ and melanomas with Breslow >4 mm, both with 19% of the cases. It was found that the large majority of the lentigo maligna, 75% (n=108) were in situ or with a Breslow ≤1 mm. On the other hand, acral lentiginous and nodular melanomas had a higher frequency of Breslow >4 mm (with 26.3% n=69 and 45.4% n=10, respectively). Stage III was the most common stage, with 26.2% (n=157) of the cases. Conclusions: A higher percentage of melanomas were observed in women, as well as a higher frequency of acral melanomas. A signifi cant number of patients were in an advanced stage, thus greater action is required for the early detection of melanoma.
Keywords : Cutaneous melanoma; Skin cancer; Epidemiology; Colombia.