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Br J Dermatol. 2009 Feb;160(2):376-9. doi: 10.1111/j.1365-2133.2008.08852.x. Epub 2008 Sep 19.

Incidence of primary cutaneous T-cell lymphoma in Norway.

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  • 1Department of Dermatology, St Olavs Hospital, and Norwegian University of Science and Technology, Trondheim, Norway.



Studies from different countries have reported an increased incidence of primary cutaneous lymphomas over the last decades.


To estimate the incidence rates of primary cutaneous T-cell lymphoma (CTCL) and mycosis fungoides (MF)/S├ęzary syndrome (SS) in Norway, and to compare these rates with those reported from other countries.


Data from the Cancer Registry of Norway on non-Hodgkin lymphomas during the period 1980-2003 were analysed.


In total, 337 cases of CTCL were reported to the Cancer Registry during the study period, of which 262 cases were classified as MF/SS. The incidence rate of CTCL increased significantly (P(trend) < 0.001) from 0.16 (95% confidence interval, CI 0.11-0.20) per 100,000 person-years in 1980-84 to 0.29 (95% CI 0.22-0.36) per 100,000 person-years in 2000-2003. The incidence of MF/SS also increased during the same period (P(trend) = 0.05) from 0.15 (95% CI 0.10-0.19) per 100,000 person-years to 0.18 (95% CI 0.13-0.24) per 100,000 person-years.


The incidence of both CTCL and MF/SS increased in Norway during the period 1980-2003.

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