title: Second neoplasms in survivors of childhood cancer: findings from the Childhood Cancer Survivor Study cohort.
abstract: OBJECTIVE
  To review the reports of subsequent neoplasms (SNs) in the Childhood Cancer Survivor Study (CCSS) cohort that were made through January 1, 2006, and published before July 31, 2008, and to discuss the host-, disease-, and therapy-related risk factors associated with SNs.
  
  
  METHODS
  SNs were ascertained by survivor self-reports and subsequently confirmed by pathology findings or medical record review. Cumulative incidence of SNs and standardized incidence ratios for second malignant neoplasms (SMNs) were calculated. The impact of host-, disease-, and therapy-related risk factors was evaluated by Poisson regression.
  
  
  RESULTS
  Among 14,358 cohort members, 730 reported 802 SMNs (excluding nonmelanoma skin cancers). This represents a 2.3-fold increase in the number of SMNs over that reported in the first comprehensive analysis of SMNs in the CCSS cohort, which was done 7 years ago. In addition, 66 cases of meningioma and 1,007 cases of nonmelanoma skin cancer were diagnosed. The 30-year cumulative incidence of SMNs was 9.3% and that of nonmelanoma skin cancer was 6.9%. Risk of SNs remains elevated for more than 20 years of follow-up for all primary childhood cancer diagnoses. In multivariate analyses, risks differ by SN subtype, but include radiotherapy, age at diagnosis, sex, family history of cancer, and primary childhood cancer diagnosis. Female survivors whose primary childhood cancer diagnosis was Hodgkin's lymphoma or sarcoma and who received radiotherapy are at particularly increased risk. Analyses of risk associated with radiotherapy demonstrated different dose-response curves for specific SNs.
  
  
  CONCLUSIONS
  Childhood cancer survivors are at a substantial and increasing risk for SNs, including nonmelanoma skin cancer and meningiomas. Health care professionals should understand the magnitude of these risks to provide individuals with appropriate counseling and follow-up.
authors.affiliation: Children's Hospital of Philadelphia, Philadelphia, PA 19104-4399, USA. meadows@chop.edu
authors.forename: Anna T
authors.initials: AT
authors.lastname: Meadows
authors.forename: Debra L
authors.initials: DL
authors.lastname: Friedman
authors.forename: Joseph P
authors.initials: JP
authors.lastname: Neglia
authors.forename: Ann C
authors.initials: AC
authors.lastname: Mertens
authors.forename: Sarah S
authors.initials: SS
authors.lastname: Donaldson
authors.forename: Marilyn
authors.initials: M
authors.lastname: Stovall
authors.forename: Sue
authors.initials: S
authors.lastname: Hammond
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Yasui
authors.forename: Peter D
authors.initials: PD
authors.lastname: Inskip
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D015331:Cohort Studies; D017281:Cost of Illness; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008577:Meningeal Neoplasms / Q000401:mortality; D008579:Meningioma / Q000401:mortality; D009369:Neoplasms / Q000401:mortality* / Q000628:therapy*; D016609:Neoplasms, Second Primary / Q000453:epidemiology* / Q000209:etiology; D011878:Radiotherapy / Q000009:adverse effects; D018570:Risk Assessment; D017678:Sex Distribution; D012737:Sex Factors; D012878:Skin Neoplasms / Q000401:mortality; D016019:Survival Analysis; D017741:Survivors / Q000706:statistics & numerical data*; D014481:United States / Q000453:epidemiology; D055815:Young Adult