title: A case of laryngeal cancer induced by exposure to asbestos in a construction site supervisor.
abstract: BACKGROUND
  Construction site supervisors are exposed to many chemicals, dusts, and metals including asbestos. Asbestos is a hazardous chemical that is carcinogenic. Laryngeal cancer is not a rare disease in Korea. The most common causes of this disease are tobacco and alcohol, and representative occupational cause is asbestos. However, up to now, no case of laryngeal cancer induced by asbestos has been reported in Korea. In this study, we report such a case in a construction site supervisor.
  
  
  METHODS
  A 60-year-old man who had been experiencing hoarseness for 2 months was diagnosed with laryngeal cancer. The pathologic diagnosis was squamous cell carcinoma in situ, based on examination of a biopsy specimen obtained by resection of the lesion. The patient had been exposed to asbestos for 38 years at construction sites where he worked until diagnosed with laryngeal cancer. He had been exposed to asbestos when demolishing buildings and inspecting materials.
  
  
  CONCLUSIONS
  The patient in this case worked with construction materials including asbestos and supervised construction for 38 years, and was thus exposed to asbestos at construction sites. Much of the asbestos was highly concentrated especially during demolition processes. We therefore consider the laryngeal cancer of this patient to be a work-related disease.
authors: Department of Occupational and Environmental Medicine, Hanyang University, Seoul, Republic of Korea.
authors: Sooyong
authors: S
authors: Roh
authors: Department of Occupational and Environmental Medicine, Kangbuk Samsung Medical Center, Seoul, Republic of Korea.
authors: Soyong
authors: S
authors: Park
authors: Department of Otolaryngology Head and Neck Surgery, Hanyang University, Seoul, Republic of Korea.
authors: Gyeong
authors: G
authors: Tae
authors: Department of Occupational and Environmental Medicine, Hanyang University, Seoul, Republic of Korea.
authors: Jaechul
authors: J
authors: Song
keywords: Asbestos; Construction industry; Laryngeal neoplasms; Occupational exposure