silicosis

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silicosis

(sĭlĭkō`sĭs), occupational disease of the lungs caused by inhalation of free silica (quartz) dust over a prolonged period of time. Free silica is dispersed in the air and inhaled by workers engaged in the mining of lead, hard coal, and gold, in cutting sandstone and granite, in sandblasting, and in the manufacture of silica abrasives. The irritative action of the silica in the lung results in the formation of nodular lesions; these may coalesce and form massive areas of fibrous tissue. In advanced cases patients experience difficult breathing, coughing with sputum, chest pain, and a tendency to develop tuberculosis or repeated attacks of pneumonia. Once fibrosis has developed there is no cure, and treatment is directed at the management of symptoms. Preventive measures adopted in industries where the hazard of silicosis exists have greatly reduced its incidence.

Silicosis

 

an occupational disease caused by the prolonged inhalation of dust containing free silicon dioxide. Silicosis is observed among workers in mining, metallurgical, and machine-building industries. It also affects workers producing porcelain and glazed pottery. Silicosis is the most destructive form of pneumoconiosis. More frequently than other diseases of this group, silicosis is accompanied by a tubercular process (silico-tuberculosis) and other complications. [23–1078–]

silicosis

[‚sil·ə′kō·səs]
(medicine)
Pneumoconiosis due to the inhalation of silica (SiO2) particles.

silicosis

Pathol a form of pneumoconiosis caused by breathing in tiny particles of silica, quartz, or slate, and characterized by shortness of breath and fibrotic changes in the tissues of the lungs
References in periodicals archive ?
But in reality, because many advanced silicotics also acquired tuberculosis, it was often impossible to separate work-related disorders from those unrelated to work.
Silicotics commonly transferred to the less strenuous jobs underground.
Meriwether and his colleagues genuinely believed that advanced silicotics posed an accident risk to themselves and fellow workers.
The prevalences of coal macules, coal nodules, silicotic nodules, and PMF were calculated among the autopsied miners and subgroups.
The relationships between years of mining and increasing severity of coal macules, coal nodules, and silicotic nodules were highly significant (P < .
Percentages of miners showing coal nodules, silicotic nodules, and PMF were lower in Kentucky and higher in Pennsylvania than in other states.
After encountering the first case of RML atelectasis associated with obstructive endobronchial silicotic lesions in February 1996, we had seen a total of 4 cases during an 18-month period, from February 1996 to August 1997.
13] The cause of atelectasis is thought to be due to enlargement of silicotic lymph nodes based on image study.
Derickson also shows how emigration of occupational silicotics from the sites of their contamination in the USA and South Africa made the problem 'disappear'.
Derickson, 'Federal intervention'; Alan Derickson, 'Industrial refugees: the migration of silicotics from the mines of North America and South Africa in the early 20th century', Labor History, vol.