Caplan's syndrome is seen in:
Caplan's syndrome is a combination of rheumatoid ahritis (RA)and pneumoconiosis that manifests as intrapulmonary nodules, which appear homogenous and well-defined on chest X-ray. -When a person with rheumatoid ahritis is exposed to such offensive materials, they are at an increased risk of developing pneumoconiosis.
COPD
Pneumoconiosis
Pulmonary edema
Bronchial asthma
Sarcoidosis