title: Increasing performance of a hospital-based cancer registry: Hacettepe University hospitals experience.
abstract: OBJECTIVE
  High-quality hospital-based cancer registry systems are the key elements of a healthy population-based cancer data. The purpose of this study was to present a recent history of establishing a valuable and reliable hospital- based cancer registry in a university hospital in Turkey, and the data gathered by this system in the last 9 years.
  
  
  METHODS
  This study included the cancer registry records of Hacettepe University Hospitals between 1-Jan-2003, and 31-Dec-2011. The study cohort included data of 39351 cancer patients and the cancer registry system was based on active data acquisition method.
  
  
  RESULTS
  Most frequent departments of reference were Medical Oncology, Radiation Oncology, General Surgery, Urology, and Pediatrics. The annual number of records gradually increased from 2675 in 2003 to 5152 in 2011. The 5 cancer types most frequency seen in adults were lung (15.5%), prostate (13.5%), stomach (6.6%), bladder (6.2%), and colon (5.8%) in men; and breast (32.7%), ovary (6.4%), uterine corpus (6.2%), uterine cervix (5.6%), and thyroid (5.0%) in women. Childhood cancers were classified according to the International Classification of Childhood Cancers, 3rd Edition (ICCC-3), and the most frequent 5 cancer types in children were tumors of the central nervous system (20.1%), lymphomas (14.6%), leukemia (14.1%), retinoblastoma (9.4%), and tumors of the sympathetic nervous system (7.7%).
  
  
  CONCLUSIONS
  Active data acquisition from departments that deal with oncologic patients in a hospital is the precise method for establishing a high-quality cancer registry system that is able to resemble the general population. Hospital- based cancer registry systems also provide highly critical information for planning, monitoring, and measuring the cancer-related services, research, and education.
authors.affiliation: Department of Pediatric Oncology, Hacettepe University Cancer Institute, Ankara, Turkey.
authors.forename: T
authors.initials: T
authors.lastname: Kutluk
authors.forename: K
authors.initials: K
authors.lastname: Mutlu Hayran
authors.forename: S
authors.initials: S
authors.lastname: Kilickap
authors.forename: D
authors.initials: D
authors.lastname: Yuce
authors.forename: I
authors.initials: I
authors.lastname: Celik
authors.forename: M
authors.initials: M
authors.lastname: Erman
authors.forename: S
authors.initials: S
authors.lastname: Yalcin
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D005260:Female; D006785:Hospitals, University / Q000706:statistics & numerical data*; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000175:diagnosis / Q000453:epidemiology* / Q000628:therapy; D015995:Prevalence; D016730:Program Development; D012042:Registries / Q000706:statistics & numerical data*; D017678:Sex Distribution; D013997:Time Factors; D014421:Turkey / Q000453:epidemiology; D055815:Young Adult