ABSTRACT
Mediastinal masses in the newborn represent a wide variety of congenital and neoplastic lesions which can present interesting diagnostic and therapeutic challenges. However, despite the heterogeneous make-up of this group of lesions, an accurate preoperative diagnosis can usually be established on the basis of the location of the mass. While the subject of this chapter deals with the treatment of masses in the newborn, it is helpful to discuss differences between various age groups when dealing with mediastinal masses in the childhood population.
