title: Brain cancer: issues and dilemmas.
abstract: A cohort study covering the eight year period, 1970-1977, identified eight deaths attributed to brain cancer among employees at a refinery/chemical plant. Five of the cases were primary brain cancers and three were either metastatic from another site or the site was undetermined. A ninth case of brain tumor unspecified was identified. Five primary brain cancers would have been expected, based on national statistics. Some issues and dilemmas related to such a cohort study were discussed.
mesh_terms: D000328:Adult; D000368:Aged; D001932:Brain Neoplasms / Q000401:mortality*; D002617:Chemical Industry; D003644:Death Certificates; D006801:Humans; D008145:Louisiana; D008297:Male; D008499:Medical Records; D008875:Middle Aged; D009784:Occupational Diseases / Q000401:mortality*; D010578:Petroleum
chemical_list: D010578:Petroleum