This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
Wood workers are associated with sinus Ca: 
Select and explain. 
A. Adeno Ca, B. Squamous cell Ca, C. Anaplastic Ca, D. Melanoma
A: Adeno Ca
Answer: A: Adeno Ca 
Explanation: Ans. A Adeno Ca Ref. Dhingra 5th/ed p 219, 6th/ed p 205 Workers of furniture industry develop adenocarcinoma of the Ethmoids and upper nasal cavity. While those engaged in Nickel refining get squamous cell and Anaplastic carcinoma.