Exposure to tanning beds ups risk of second primary melanomas
Increased surveillance is recommended in melanoma patients exposed to artificial ultraviolet radiation (arUVR) from tanning beds, according to a study.
Lifetime exposure to arUVR was greater among younger, especially female, patients compared with those aged ≥40 years. Patients with multiple primary melanomas had a higher likelihood of exposure to arUVR at any age.
Among patients with additional primary melanomas, those exposed to arUVR got their second primary melanoma significantly earlier; of patients exposed to arUVR through tanning beds, 67 percent had their second primary diagnosed at the time of or within 1 year of their original diagnosis vs 28 percent of nontanners (p=0.011).
Median time to diagnosis of second primary melanomas was 225 days vs 3.5 years in patients exposed to arUVR compared to those not exposed, respectively (p=0.027).
A previous study reported that exposure to tanning beds elevates the risk of malignant melanomas, particularly in women aged ≤45 years, highlighting the hazards of tanning bed exposure. [Int J Dermatol 2007;46:1253-1257]
The present retrospective study, which sought to determine whether individuals who developed melanoma after arUVR exposure from tanning beds had unique characteristics, included a total of 434 melanoma patients. Those who consented at the initial appointment completed a questionnaire on phenotypic traits, medical history and UVR exposure.
One limitation of the study was its relatively small sample size.
“Melanoma incidence has increased; the primary modifiable risk factor is UVR from the sun or arUVR from tanning beds,” the authors said.