Caplan's syndrome

Introduction

Rheumatoid pneumoconiosis, thought to be a more benign form of complicated silicosis.

Etiology

• silicosis
• asbestosis
• aluminosis
• other conditions

Pathology

• rheumatoid pulmonary nodules 1-5 cm in diameter that evolve rapidly & undergo cavitation

More general terms

• complicated silicosis; progressive massive (silico) fibrosis
• syndrome

Additional terms

• rheumatoid nodule