Cristin-resultat-ID: 1952726
Sist endret: 9. november 2021, 11:44
Vitenskapelig foredrag

Long-term Trend on Tumour Thickness of Melanoma in Norway

  • Raju Rimal


Navn på arrangementet: NOFE conference 2021
Sted: Bergen, Norway
Dato fra: 3. november 2021
Dato til: 4. november 2021


Arrangørnavn: Norwegian Epidemiological Association (NOFE)

Om resultatet

Vitenskapelig foredrag
Publiseringsår: 2021



Epidemiologi medisinsk og odontologisk statistikk


Registerstudier • Hudkreft • Kreft

Beskrivelse Beskrivelse


Long-term Trend on Tumour Thickness of Melanoma in Norway


Introduction: Norway ranks fifth in incidence and second in mortality of cutaneous melanoma worldwide. Tumour thickness at diagnosis is the cornerstone of melanoma classification and the most important prognostic factor for clinically localized primary melanoma. Increased incidence of thin tumours may be a result of increased awareness and changes in pathological practice. Recently digitized tumour thickness data (1980-2007) and data from the Melanoma Registry (2008-), enable investigating long-term trends in melanoma thickness. Aim: To investigate trends in tumour thickness, overall and in important subgroups in a nationwide case series from 1980 to 2019. Methods: Tumour thickness was categorized in T-categories: T1 (≤1.0 mm), T2 (1.0-2.0 mm), T3 (>2.0-4.0 mm), and T4 (>4.0 mm). Incidence rates were age-standardized using the European standard population. Trends and changes in incidence rate over time were analysed with annual percentage changes (APC) and average APC. Conclusions: T1 melanomas had the largest increase in incidence over time. An increasing trend was also observed in thicker tumours, suggesting that the rise in melanoma incidence is due to not only overdiagnosis/pathological practice.


Aktiv cristin-person

Raju Rimal

  • Tilknyttet:
    ved EpiStat ved Universitetet i Oslo
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