Tattoos and cutaneous squamous cell carcinoma: a population-based case-control study

Area of Science:

• Dermatology
• Epidemiology
• Oncology

Background:

• Tattoo prevalence is high in Western countries (approx. 20%).
• Tattoo inks may contain potentially carcinogenic compounds.
• The association between tattoos and skin cancer risk remains unclear.

Purpose of the Study:

• To investigate the association between tattoo exposure and the risk of developing cutaneous squamous cell carcinoma (cSCC).

Main Methods:

• Population-based case-control study in Sweden (2014-2017).
• Included 2857 cSCC cases and 3 matched controls per case.
• Assessed tattoo exposure and lifestyle factors via questionnaire, analyzed using logistic regression.

Main Results:

• 15.1% of cases and 17.6% of controls reported having at least one tattoo.
• No statistically significant increased risk of cSCC was observed in tattooed individuals (IRR 0.95; 95% CI 0.78-1.15).
• Tattoo exposure showed no association with cSCC risk in this study.

Conclusions:

• The study suggests no increased risk of cSCC associated with tattoo exposure.
• Further epidemiological research is recommended to establish a definitive consensus on the association.