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Background <p>The Brazilian Caucasian population makes up 44.5% of the number found in the USA. Based on an extrapolation of melanomas in Caucasians found in the US and proportionally maintained in Brazil, it can be estimated that we should expect about 44,000 new melanomas annually in our country. According to the National Cancer Institute (INCA), annually, Brazil has a forecast of 8450 new melanomas per year. The present study aims to survey melanomas in 2019 in pathology laboratories.</p> Project design and methods <p>A multicenter, cross-sectional, observational study was conducted. Melanoma reports were collected from pathology laboratories across Brazil from January 1 to December 31, 2019, to avoid the potential impact of the Covid-19 pandemia on patient care and diagnostic procedures. Data collected included sociodemographic and topographic characteristics and histopathological characteristics. All laboratories signed a Confidentiality Compliance Term for Data Management.</p> Results <p>A total of 1,825 cases of cutaneous melanoma were diagnosed by 26 pathology laboratories. Gender distribution was balanced, with a slight predominance of females (50.2%). Most patients were 60 years or older (62.6%). The trunk was the most frequent site of lesions (35.7%). Superficial spreading melanoma was the most prevalent histological subtype (54.7%). Breslow’s thickness was found to be 2.35 ± 4.54&#xa0;mm.</p> Discussion <p>In three states (Bahia, Rio Grande do Norte, and Santa Catarina), reported new cases of melanoma outnumbered the Brazilian National Institute of Cancer (INCA) predicted cases for 2018. The findings suggest a potential underestimation of melanoma cases in some regions compared to INCA predictions.</p> Conclusion <p>The study provides valuable insights into the prevalence and characteristics of cutaneous melanoma in Brazil.</p>

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Nationwide pilot survey of cutaneous melanoma in Brazil

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月25日

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  • Gilles Landman,
  • Maria Luísa de Lima Landman,
  • Luiz Antonio Rodrigues Freitas,
  • Nathanael de Freitas Pinheiro Junior,
  • Clóvis Klock,
  • Daniela Mayumi Takano,
  • Luzete Cristina Silva Granero,
  • Maria Eduarda Rodacki,
  • Igor Santos Costa,
  • Juliana Cordeiro,
  • Heráclito Maia,
  • Nadja Aparecida Lorencette,
  • Karina Munhoz de Paula Alves Coelho,
  • Maria Beatriz Shiozawa,
  • Thyago Marsicano Vieira,
  • Pedro Bramorski,
  • Luciana Schultz,
  • Beatriz Moreira Leite,
  • Gabriela Di Giunta Funchal,
  • Gisele Alborghetti Nai,
  • Aryon de Almeida Barbosa Junior,
  • Juan Maceira,
  • Ruberley Acosta Moreira,
  • Orlando Fermozelli Rodrigues Junior,
  • Daniela Savi,
  • Miriam de Fátima Brasil Engelman,
  • Flávio Cavarsan,
  • Eduardo Bertolli,
  • Renato Marchiori Bakos,
  • Rodrigo Ramella Munhoz,
  • Caroline Santos Silva,
  • Nathália Muraiviechi Passos,
  • Miguel Ângelo Rodrigues Brandão

摘要

Background

The Brazilian Caucasian population makes up 44.5% of the number found in the USA. Based on an extrapolation of melanomas in Caucasians found in the US and proportionally maintained in Brazil, it can be estimated that we should expect about 44,000 new melanomas annually in our country. According to the National Cancer Institute (INCA), annually, Brazil has a forecast of 8450 new melanomas per year. The present study aims to survey melanomas in 2019 in pathology laboratories.

Project design and methods

A multicenter, cross-sectional, observational study was conducted. Melanoma reports were collected from pathology laboratories across Brazil from January 1 to December 31, 2019, to avoid the potential impact of the Covid-19 pandemia on patient care and diagnostic procedures. Data collected included sociodemographic and topographic characteristics and histopathological characteristics. All laboratories signed a Confidentiality Compliance Term for Data Management.

Results

A total of 1,825 cases of cutaneous melanoma were diagnosed by 26 pathology laboratories. Gender distribution was balanced, with a slight predominance of females (50.2%). Most patients were 60 years or older (62.6%). The trunk was the most frequent site of lesions (35.7%). Superficial spreading melanoma was the most prevalent histological subtype (54.7%). Breslow’s thickness was found to be 2.35 ± 4.54 mm.

Discussion

In three states (Bahia, Rio Grande do Norte, and Santa Catarina), reported new cases of melanoma outnumbered the Brazilian National Institute of Cancer (INCA) predicted cases for 2018. The findings suggest a potential underestimation of melanoma cases in some regions compared to INCA predictions.

Conclusion

The study provides valuable insights into the prevalence and characteristics of cutaneous melanoma in Brazil.