Pick Topic
Review Topic
List Experts
Examine Expert
Save Expert
  Site Guide ··   
Melanoma: HELP
Articles by Bernardo Gontijo
Based on 3 articles published since 2010
(Why 3 articles?)

Between 2010 and 2020, Bernardo Gontijo wrote the following 3 articles about Melanoma.
+ Citations + Abstracts
1 Review Giant congenital melanocytic nevus. 2013

Viana, Ana Carolina Leite / Gontijo, Bernardo / Bittencourt, Flávia Vasques. ·Minas Gerais Federal University, Teaching Hospital, dermatology service, Belo HorizonteMG, Brazil, MD, MSc - Voluntary dermatologist at the dermatology service at Minas Gerais Federal University Teaching Hospital (UFMG) - Belo Horizonte (MG), Brazil. · Minas Gerais Federal University, Medical School, Belo HorizonteMG, Brazil, MD, PhD - Associate Professor of dermatology at Minas Gerais Federal University Medical School (UFMG) - Belo Horizonte (MG), Brazil. · Minas Gerais Federal University, Medical School, Belo HorizonteMG, Brazil, MD, PhD - Adjunct Professor of dermatology at Minas Gerais Federal University Medical School (UFMG) - Belo Horizonte (MG), Brazil. ·An Bras Dermatol · Pubmed #24474093.

ABSTRACT: Giant congenital melanocytic nevus is usually defined as a melanocytic lesion present at birth that will reach a diameter ≥ 20 cm in adulthood. Its incidence is estimated in <1:20,000 newborns. Despite its rarity, this lesion is important because it may associate with severe complications such as malignant melanoma, affect the central nervous system (neurocutaneous melanosis), and have major psychosocial impact on the patient and his family due to its unsightly appearance. Giant congenital melanocytic nevus generally presents as a brown lesion, with flat or mammilated surface, well-demarcated borders and hypertrichosis. Congenital melanocytic nevus is primarily a clinical diagnosis. However, congenital nevi are histologically distinguished from acquired nevi mainly by their larger size, the spread of the nevus cells to the deep layers of the skin and by their more varied architecture and morphology. Although giant congenital melanocytic nevus is recognized as a risk factor for the development of melanoma, the precise magnitude of this risk is still controversial. The estimated lifetime risk of developing melanoma varies from 5 to 10%. On account of these uncertainties and the size of the lesions, the management of giant congenital melanocytic nevus needs individualization. Treatment may include surgical and non-surgical procedures, psychological intervention and/or clinical follow-up, with special attention to changes in color, texture or on the surface of the lesion. The only absolute indication for surgery in giant congenital melanocytic nevus is the development of a malignant neoplasm on the lesion.

2 Article A prospective study of patients with large congenital melanocytic nevi and the risk of melanoma. 2017

Viana, Ana Carolina Leite / Goulart, Eugênio Marcos Andrade / Gontijo, Bernardo / Bittencourt, Flávia Vasques. ·Dermatology Unity - Hospital das Clinicas - Universidade Federal de Minas Gerais (UFMG) - Belo Horizonte (MG), Brazil. · Department of Pediatrics - School of Medicine, Universidade Federal de Minas Gerais (UFMG) - Belo Horizonte (MG), Brazil. ·An Bras Dermatol · Pubmed #28538879.

ABSTRACT: Background:: Large congenital melanocytic nevus (LCMN) is considered a risk factor for melanoma, although the magnitude of this risk is controversial. Objective:: To evaluate the risk of melanoma development in patients with LCMN seen at a dermatology referral center in Brazil during a twelve-year period. To the best of our knowledge, there are no published similar studies on large congenital melanocytic nevus in South America. Methods:: Our prospective cohort included only patients with congenital nevi ≥20cm. The cumulative risk of developing melanoma and the standardized morbidity ratio were calculated for patients followed up prospectively for at least 1 month. Results:: Sixty-three patients were enrolled in this study. One patient who developed melanoma prior to enrollment was excluded, and five were eliminated because of insufficient follow-up time. Mean follow-up for the remaining 57 patients was 5.5 years (median 5.2 years). Median age of entry into the study was 2.6 years. Most patients (75.4%) underwent only clinical observation. Melanomas occurred in 2 (3.5%) patients. Five-year cumulative risk for melanoma was 4.8% (95% CI: 1.9-11.5%). Standardized morbidity ratio was 1584 (95% CI: 266-5232, p<0.001). Study limitations:: The small sample size reduces the accuracy of risk estimates. Conclusions:: This study analyzed prospectively for the first time data from South America demonstrating that patients with LCMN have a higher risk of developing melanoma than the general population (p<0.001).

3 Article Epidemiological aspects of melanoma at a university hospital dermatology center over a period of 20 years. 2013

Brandão, Flavia Vieira / Pereira, Ana Francisca Junqueira Ribeiro / Gontijo, Bernardo / Bittencourt, Flávia Vasques. ·Brasilia University (UnB), Hospital Universitário de Brasilia, Brasilia, DF, Brazil. flaviavieirabrandao@yahoo.com.br ·An Bras Dermatol · Pubmed #23793193.

ABSTRACT: BACKGROUND: The incidence of melanoma has been steadily rising in past decades. Although it accounts for only 3% of all skin cancers, it is responsible for 75% of deaths. OBJECTIVE: to describe the epidemiological aspects of melanoma in a university hospital setting over a period of 20 years. METHODS: A total of 166 patients were analyzed between January 1990 and January 2010 for clinical and histological variables and correlations between them. A 5% level of significance was adopted. RESULTS: The majority of patients were Caucasians (74%), females (61%), with a mean age at diagnosis of 55. The predominant histological type was lentigo maligna/lentigo maligna melanoma (35.7%) and the head and neck was the most affected site (30.7%). Among non-Caucasians, the acral region was the most affected. Most tumors were in situ (41.1%). Growth of the lesion was the most frequent complaint (58.1%) and bleeding was most frequently associated with melanomas with a depth > 4mm. There were seven deaths (4.2%), with a high risk among men, non-Caucasians and those under 20 years of age, with a Breslow's depth > 2mm, with lentiginous acral melanoma and with a history of growth and bleeding. CONCLUSIONS: Our sample differs from most of the studies in the predominant location (head and neck), histological type (lentigo maligna/ lentigo maligna melanoma) and a major risk of death under the age of 20, which could be with a reflex of regional variation. Broader studies are necessary for validation of the results.