Occupational risk factors for upper respiratory tract and upper digestive tract cancers.

Occupational risk factors for upper respiratory tract and upper digestive tract cancers.

A case-control study was conducted to investigate occupational risk factors for upper respiratory and digestive tract cancers (nose, lips, buccal cavity, pharynx, and larynx) in the north of France. Two hundred and eighty three cases of histologically confirmed cancer in men treated during the first semester of 1983 at the Regional Cancer Institute were included in the study. Two controls per c...

Upper Respiratory Tract Infections

The upper respiratory system includes the nose, nasal cavity, pharynx, and larynx with subglottic area of trachea. In the normal circumstances, air enters the respiratory system through nostrils where it is filtered, humidified, and warmed inside the nasal cavity. Conditioned air passes through pharynx, larynx, and trachea and then enters in lower respiratory system. Dysfunction of any part of ...

Upper Respiratory Tract Infection

Upper respiratory tract infection (URI) is a general term for a heterogeneous group of illnesses caused by numerous etiologic agents that affect the mucosal lining of the upper respiratory tract, including the middle-ear cavity and paranasal sinuses. URIs are primarily caused by viruses, rhinoviruses being the most common etiological agents. Respiratory viruses transmit easily via direct contac...

Occupational rhinitis and other work-related upper respiratory tract conditions.

The nose and upper airways form the initial area of impact for air pollutants and allergens. The development of nasal allergies in the workplace (occupational rhinitis) may herald subsequent development of occupational asthma. Exposure controls, periodic surveillance, and early intervention may circumvent work-related airways disease and prevent unnecessary worker impairment and disability.

prevalence and risk factors for staphylococcus aureus colonization in upper respiratory tract of patients