<prompt> Caplan Syndrome is Pneumoconiosis withLymphadenopathyCongestive Cardiac FailureRheumatoid AhritisHIV  <response>: Answer is C Rheumatoid Ahritis: Caplans syndrome refers to the association of Pneumoconiosis and Rheumatoid Ahritis. Caplans Syndrome is a rare subset of pulmonary nodulosis characterized by the development of nodules and pneumoconiosis following silica exposure in patients with Rheumatoid Ahritis. Caplans Syndrome first described in coal miners but subsequently found in patients with silicosis includes seropositive Rheumatoid ahritis with charachteristic pneumoconiotic nodules. Silica has immunoadjuvant propeies and is often present in anthractic coal dust. 