1st April 2022

A 71-year-old man presents with gross haematuria

A 71-year-old man presents with gross haematuria. He has no past medical history, however, he does mention to you that he used to work in a factory where dyes were made, and back in those days their safety measures weren’t what they are today. Cystoscopy shows that this man has a transitional cell carcinoma of his bladder. Which one of the following exposures is most likely to have caused this man’s bladder cancer?

Select the SINGLE most appropriate option from the list below. Select ONE option only.