Rheumatoid pneumoconiosis (Caplan's syndrome) with a classical presentation.

Rheumatoid pneumoconiosis (Caplan's syndrome) in an asbestos worker.

Influence of rheumatoid factor in coalminers' pneumoconiosis in the Fujian Shaowu colliery, south China.

Coalminers' pneumoconiosis may be complicated by the development of progressive massive fibrosis (PMF) or by rheumatoid pneumoconiosis (Caplan's syndrome).'2 The arthritis in Caplan's syndrome may precede, coincide with, or follow the development of pulmonary radiological shadows. These conditions are common in miners and may be seen in workmen exposed to dusts other than coal.' The Fujian Shao...

Serum protein fractions in rheumatoid pneumoconiosis without arthritis.

Fractionation of the serum proteins by filter-paper electrophoresis in 14 coal-miners who had the characteristic radiological opacities of rheumatoid pneumoconiosis but no evidence of rheumatoid arthritis showed a reduction in the mean level of albumin and increases in the alpha-2 and gamma-globulins compared with the values in non-arthritic miners with simple coal-workers' pneumoconiosis and i...

Caplan's Syndrome Related to Rheumatoid Factors

The rheumatoid pneumoconiosis syndrome was originally described as a characteristic chest radiographic appearance in coal-workers associated with clinical rheumatoid arthritis (Caplan, 1953). This association was later confirmed as real and not fortuitous by Miall, Caplan, Cochrane, Kilpatrick, and Oldham (1953) using an unselected population. The original communication defined the radiographic...

Rheumatoid Pneumoconiosis in Association with Asbestosis.

In 1953 a new syndrome was described in which the association of rheumatoid arthritis with nodular fibrosis of the lung parenchyma was noted (Caplan, 1953). Though this condition resembles progressive massive fibrosis in some ways, there are certain distinctive features. The opacities that are found in Caplan's syndrome are usually more peripherally situated, tend to be multiple, and more commo...