Analysis of trends and seasonal variation in primary cutaneous melanoma: an Irish study.
AffiliationDepartment of Histopathology, Beaumont Road, Dublin, Ireland Department of Mathematical Sciences, University College Dublin, Belfield, Dublin 4, Ireland Department of Dermatology, Beaumont Hospital, Beaumont Road, Dublin, Ireland.
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CitationAnalysis of trends and seasonal variation in primary cutaneous melanoma: an Irish study. 2010:notClin Exp Dermatol
JournalClinical and experimental dermatology
AbstractA seasonal variation in the presentation of cutaneous melanoma has been documented in several studies. We performed a retrospective review of primary cutaneous melanomas (n = 263) from our institution to examine whether the seasonal patterns of presentation noted in the literature would be similar in Ireland, a climate with low ambient sunshine. A summer : winter ratio was determined for age, gender, subtype, location and Breslow thickness. We found an increase in total numbers of melanomas, particularly in men. The summer : winter ratio was 2.39 for all patients (95% CI 1.60-3.57, P < 0.001), with seasonal variations noted for location, thickness and subtype (excluding lentigo). Melanomas presenting over the summer tended towards a greater Breslow thickness than did those presenting in winter. This subclassification of primary cutaneous melanoma with summer : winter ratios based on patient and tumour characteristics gave remarkably similar results to previously published reports, notwithstanding the low levels of annual ambient sunshine in Ireland.
Item TypeArticle In Press