this study suggests that ( a ) the sinonasal cancers in nickel refinery workers conformed to the usual distribution of histological types observed in the general population ( in contrast to the predilection for adenocarcinomas in wood workers ) , and ( b ) the lung cancers in nickel-refinery workers showed preponderance of squamous cell carcinomas and deficit of adenocarcinomas , compared to prevalent proportions of these neoplasms , possibly reflecting the paucity of women in the cohorts and temporal trends during the six decades in which the tumors were diagnosed .
C0006826
cancers
C0027651
tumors