Caplan's syndrome is: (A) Splenomegaly + Neutropenia, (B) Rheumatoid Arthritis + Pneumoconiosis, (C) Pneumoconiosis + Splenomegaly, (D) Pneumoconiosis + Neutropenia
Answer is B. Rheumatoid Arthritis + Pneumoconiosis nodules = Caplan's syndrome.
Neutropenia + Splenomegaly + Nodular RA = Felty's syndrome.