<prompt> Caplan syndrome is seen inCOPDPneumoconiosisPulmonary odemaBronchial asthma  <response>: Ref Harrison 17th1625 Caplan syndrome is a combination of rheumatoid ahritis and pneumoconiosis that manifests as intrapulmonary nodules which appears homogeneous and well defined on chest X ray... It is also called as rheumatoid pneumoconiosis 