A 9-Year-Old Child With a Large Thoracic Mass

Abstract

A healthy 9-year-old had 10 days of nonproductive cough without fever, wheeze, chest pain, or abdominal pain but with diminished breath sounds in the right lower lung field. Results of laboratory testing were unremarkable; computed tomography revealed a fat-density mass in the right anterior mediastinum. What is the diagnosis and what would you do next?