Flavia C Pozzobon1, Alvaro Enrique Acosta2. 1. FP: MD. M. Sc. Dermatologist Universidad Nacional de Colombia. Universidad de Barcelona. Instituto Nacional de Cancerología. Bogotá, Colombia. fcpozzobonnt@unal.edu.co. 2. AA: MD. Oncologist Dermatologist Universidad Nacional de Colombia, Universidad Javeriana. Instituto Nacional de Cancerología. Bogotá, Colombia. aeacostam@unal.edu.co.
Abstract
OBJECTIVE: To describe clinical, histopathological and treatment characteristics of melanoma in a private institution of Bogotá, Colombia, and to identify differences regarding sex and age. MATERIALS AND METHODS: Observational, retrospective study. 415 medical records between January 1999 and May 2014 were analyzed. RESULTS: Out of 415 patients, 244 (58.8%) were females and 171 (41.2%) were males with a mean age of 56.1 ±16.2 SD. Superficial spreading melanoma (SSMM) was the main subtype (n=175, 42.7%). Breslow's thickness ≤1mm was predominant, while phototypes II and III were more frequent (n=87, 69.6%). Melanoma was predominantly localized on the head in men (n=83, 50.3%) and in the lower limbs in women (n=89, 36.8%), with a higher frequency of SSMM pattern among patients aged ≤65. Lentigo maligna (LM) was more frequent in patients aged >65 (p<0.001), with a higher number of ulcerated melanomas (p=0.046). CONCLUSIONS: A predominance of thin SSMM and fair skin phototypes were found, unlike previous reports that showed acral lentiginous melanoma (ALM) as predominant, which may be caused by local variations related to mixed ethnicity.
OBJECTIVE: To describe clinical, histopathological and treatment characteristics of melanoma in a private institution of Bogotá, Colombia, and to identify differences regarding sex and age. MATERIALS AND METHODS: Observational, retrospective study. 415 medical records between January 1999 and May 2014 were analyzed. RESULTS: Out of 415 patients, 244 (58.8%) were females and 171 (41.2%) were males with a mean age of 56.1 ±16.2 SD. Superficial spreading melanoma (SSMM) was the main subtype (n=175, 42.7%). Breslow's thickness ≤1mm was predominant, while phototypes II and III were more frequent (n=87, 69.6%). Melanoma was predominantly localized on the head in men (n=83, 50.3%) and in the lower limbs in women (n=89, 36.8%), with a higher frequency of SSMM pattern among patients aged ≤65. Lentigo maligna (LM) was more frequent in patients aged >65 (p<0.001), with a higher number of ulcerated melanomas (p=0.046). CONCLUSIONS: A predominance of thin SSMM and fair skin phototypes were found, unlike previous reports that showed acral lentiginous melanoma (ALM) as predominant, which may be caused by local variations related to mixed ethnicity.
Authors: Jose D Tovar-Parra; Luz D Gutiérrez-Castañeda; Sebastián R Gil-Quiñones; Jhon A Nova; Leonardo Pulido Journal: Biomed Res Int Date: 2020-10-10 Impact factor: 3.411