Barium has a high radio-opacity and the disease may develop after few months of exposure. Extremely dense, discrete small opacities of 2–4 mm diameter, sometimes of a star-like configuration, are seen on the radiograph. Their distribution is uniform.
Barium has high radio-opacity, and the condition may develop after a short period of exposure. Radiographic images reveal small, dense, isolated opacities measuring 2–4 mm in diameter, occasionally arranged in a star-like pattern. The distribution of these opacities is uniform.