Disease/Syndrome

Pneumoconioses, benign

Category

Pneumoconiosis (Pulmonary Fibrosis)

Acute/Chronic

Chronic

Synonyms

Baritosis; Stannosis; Siderosis; Benign pneumoconiosis

Comments

The most common benign pneumoconioses are siderosis (iron), stannosis (tin), and baritosis (barium). Chest x-rays of workers with benign pneumoconioses show small opacities caused by lung retention of one of these radiopaque metals. Workers are asymptomatic and have normal pulmonary function studies. The x-ray changes gradually resolve after the workers are removed from exposure. Tin and barium miners may also be exposed to silica. [Rom, p. 526, 537; Rosenstock, p. 410] Other metals with high radiodensity that can potentially produce benign pneumoconioses are titanium, vanadium, zirconium, antimony, hafnium, and the rare earth metals. [Harber, p. 502] See "RARE EARTH METALS."

Latency/Incubation

Years to decades

Diagnostic

Chest x-ray

ICD-9 Code

503

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