Recent Changes in the Incidence and Characteristics of Cutaneous Squamous Cell Carcinomas in Finland from 2006 to 2020: A Retrospective Cohort Study

Authors

  • Marika Lounas Department of Dermatology, Tampere University Hospital, Tampere, Finland; Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
  • Leea Ylitalo Department of Dermatology, Tampere University Hospital, Tampere, Finland; Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
  • Teea Salmi Department of Dermatology, Tampere University Hospital, Tampere, Finland; Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
  • Juha Jernman Department of Pathology, Tampere University and Fimlab Laboratories, Tampere, Finland
  • Johanna Palve Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland; Department of Plastic Surgery, Tampere University Hospital, Tampere, Finland
  • Tiina Luukkaala Research, Development and Innovation Centre, Tampere University Hospital and Health Sciences, Faculty of Social Sciences, Tampere University, Finland
  • Niina Korhonen Department of Dermatology, Tampere University Hospital, Tampere, Finland; Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland

DOI:

https://doi.org/10.2340/actadv.v104.39891

Keywords:

cutaneous squamous cell carcinoma, cohort study, incidence, keratinocyte carcinoma, non- melanoma skin cancer, real world incidence

Abstract

Registers recording only 1 tumour per patient do not enable assessment of the real burden of cutaneous squamous cell carcinoma. To investigate recent changes in the incidence and characteristics of tumours, a retrospective 15-year patient cohort study was performed in Finland. Histopathological diagnoses of cutaneous squamous cell carcinomas diagnosed between 2016 and 2020 were obtained from the pathology database and clinical data from patient medical records and combined with previously collected data for the years 2006–2015. Altogether 1,472 patients with 2,056 tumours were identified. The crude incidence increased from 19/100,000 persons in 2006 to 42 in 2020 (p < 0.001), increasing most in people aged over 80 years. The percentage of tumours located on the trunk increased from 5.3% during the first 5-year period, 2006–2010, to 9.0% in 2016–2020. Also, the location of tumours was significantly different between men and women, as men had more tumours on the scalp and ears, and women on the lower limbs. A slight change in the tumours from poorly to well differentiated and a decrease in the invasion depth were noted between 2006 and 2020. As the burden of tumours continues to increase, more attention should be paid to their prevention.

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Published

2024-05-30

How to Cite

Lounas, M., Ylitalo, L. ., Salmi, T., Jernman, J., Palve, J., Luukkaala, T., & Korhonen, N. (2024). Recent Changes in the Incidence and Characteristics of Cutaneous Squamous Cell Carcinomas in Finland from 2006 to 2020: A Retrospective Cohort Study. Acta Dermato-Venereologica, 104, adv39891. https://doi.org/10.2340/actadv.v104.39891