A plea for better coding rules for bladder cancer.

  title={A plea for better coding rules for bladder cancer.},
  author={Leo J Schouten and Lambertus A Kiemeney},
  journal={British Journal of Cancer},
  pages={1254 - 1255}
Sir We read with interest the article by Gulliford et al. (Br. J. Cancer (1993) 67, 819-821) describing the reliability of cancer registry data with respect to 466 bladder cancer cases. Cancer registry data are found to be reliable, except for tumour stage. However, the authors do not discuss the item 'behaviour code for neoplasms', the fifth digit of the ICD-O morphology code (World Health Organisation, 1976). The behaviour code is an essential item, because it separates invasive malignancies… CONTINUE READING