<prompt> Adenocarcinoma of ethmoid sinus occurs commonly in?Fire workersChimney workersWatch markersWood workers  <response>: Workers of the furniture industry woodworkers develop a demo carcinoma of the ethmoids and the nasal cavity, while those engaged in nickel refining get squamous cell anaplastic carcinoma. Ref: Textbook of diseases of ENT, PL Dhingra, 7th edition, pg no. 231 