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Silicosis can become "complicated" by the development of severe scarring (progressive massive fibrosis, or also known as conglomerate silicosis), where the small nodules gradually become confluent, reaching a size of 1 cm or greater. PMF is associated with more severe symptoms and respiratory impairment than simple disease.
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Clinical and toxicological research conducted on volcanic crystalline silica has found little to no evidence of its ability to cause silicosis/pneumoconiosis-like diseases and geochemical analyses have shown that there are inherent factors in the crystalline structure which may render volcanic crystalline silica much less pathogenic than some ...
A fact from Silicosis appeared on Wikipedia's Main Page in the Did you know column on 24 November 2005. The text of the entry was as follows: Did you know... that silicosis is a lung disease caused by inhalation of silica, the second most common mineral on earth's crust? A record of the entry may be seen at Wikipedia:Recent additions/2005/November.
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[1] [2] The three most common types are asbestosis, silicosis, and coal miner's lung. [3] Pneumoconiosis often causes restrictive impairment, [4] although diagnosable pneumoconiosis can occur without measurable impairment of lung function. [1] [2] Depending on extent and severity, it may cause death within months or years, or it may never ...
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Progressive massive fibrosis (PMF), characterized by the development of large conglomerate masses of dense fibrosis (usually in the upper lung zones), can complicate silicosis [1] and coal worker's pneumoconiosis. [2]