Melanocytic Naevi and Melanoma in Childhood Cancer Survivors
Author Information
Author(s): A. Green, P. Smith, W. McWhirter, P. O'Regan, D. Battistutta, M.E. Yarker, K. Lape
Primary Institution: Queensland Institute of Medical Research
Hypothesis
Survivors of childhood cancer have more melanocytic naevi than matched controls.
Conclusion
Childhood cancer survivors have significantly more atypical and acral naevi compared to controls, suggesting a link between chemotherapy and naevus development.
Supporting Evidence
- Significantly more oncology patients had atypical naevi compared to controls.
- Acral naevi were present in 21.3% of oncology patients compared to 8.4% of controls.
- Matched analyses revealed no significant difference in overall density of naevi among oncology patients and controls.
Takeaway
Kids who survived cancer might have more moles, especially unusual ones, because of their treatment.
Methodology
Total-body naevus counts were obtained from 263 oncology patients and 263 matched controls, with additional data collected from parents about factors influencing naevus development.
Potential Biases
Observation bias is unlikely as research nurses were unaware of the hypotheses but not blinded to chemotherapy status.
Limitations
The study did not establish a causal link between chemotherapy and overall naevus density, and the findings may be influenced by sun exposure.
Participant Demographics
263 patients (103 females), median age 8.2 years, primarily treated for leukaemia.
Statistical Information
P-Value
p<0.0001
Confidence Interval
95% confidence interval 1.2, 4.9
Statistical Significance
p<0.05
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