title: Incidence of primary cutaneous T-cell lymphoma in Norway.
abstract: BACKGROUND
  Studies from different countries have reported an increased incidence of primary cutaneous lymphomas over the last decades.
  
  
  OBJECTIVE
  To estimate the incidence rates of primary cutaneous T-cell lymphoma (CTCL) and mycosis fungoides (MF)/Sézary syndrome (SS) in Norway, and to compare these rates with those reported from other countries.
  
  
  METHODS
  Data from the Cancer Registry of Norway on non-Hodgkin lymphomas during the period 1980-2003 were analysed.
  
  
  RESULTS
  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.
  
  
  CONCLUSIONS
  The incidence of both CTCL and MF/SS increased in Norway during the period 1980-2003.
authors.affiliation: Department of Dermatology, St Olavs Hospital, and Norwegian University of Science and Technology, Trondheim, Norway. marit.saunes@ntnu.no
authors.forename: M
authors.initials: M
authors.lastname: Saunes
authors.forename: T I Lund
authors.initials: TI
authors.lastname: Nilsen
authors.forename: T B
authors.initials: TB
authors.lastname: Johannesen
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D009182:Mycosis Fungoides / Q000175:diagnosis / Q000453:epidemiology*; D009367:Neoplasm Staging; D009664:Norway / Q000453:epidemiology; D012751:Sezary Syndrome / Q000175:diagnosis / Q000453:epidemiology*; D012878:Skin Neoplasms / Q000175:diagnosis / Q000453:epidemiology*; D015996:Survival Rate; D055815:Young Adult