Pneumoconiosis

 ICD9        = 500-505|

}} Pneumoconiosis is a lungcondition caused by the inhalation of dust, characterized by formation of nodular fibroticchanges in lungs.

Many substances can cause pneumoconiosis including asbestos, silica, talcand metals.

Depending on the type of dust, variants of the disease are considered. For example there are silicosis, also known as grinders' disease; and pneumosilicosis, which is caused by the inhalation of the dust of stone, sand, or flint containing silica. Because many common minerals contain silica, there are different types of silicosis.

The term Pneumonoultramicroscopicsilicovolcanoconiosisand some variants thereof turned out to be a hoax created as a word puzzle.

Incidents

The Hawk's Nest incidentwas one of the earliest and most prominent incidents of large-scale silicosis deaths. But while stringent occupational reforms have largely eliminated it in Europe, the US National Institute for Occupational Safety and Health(NIOSH) estimates that a million workers remain at risk to silicosis, 100,000 of whom are at high risk. They estimate 59,000 will develop adverse effects.

But due to pressure from industry groups, its effects are little known and hardly acted upon. A 1992Houston Chronicle investigation found "silicosis is often misdiagnosed by doctors, disdained by industry officials and unknown to the very workers who stand the greatest chance of getting it. ... Old warnings and medical studies have been ignored, products falsely advertised and government rules flouted--especially with regard to sandblasting, an activity so hazardous that NIOSH recommended its banning in 1974."

Types

• Bauxite pneumoconiosis
• Black lung disease

External links

• Image of Silicotic noduleses:Neumoconiosis

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This article is licensed under the GNU Free Documentation License.
It uses material from the http://en.wikipedia.org/wiki/Pneumoconiosis Wikipedia article Pneumoconiosis.