The study presents 41 children in whom thymic hypertrophy was diagnosed, including 37 cases in the course of infectious diseases and 4 with clinical symptoms suggesting thymic hypertrophy, such as: inspiratory dyspnea, restlessness, apnea attacks, vomiting. Thymic size was evaluated just after the diagnosis had been made and after glicocorticoid treatment. Statistically significant thymic regression by 73% was obtained. The threshold of thymic volume reduction that enabled discontinuation of hormonal treatment, was set to 60%.

Keywords: thymic hypertrophy, children