Pulmonary emphysema belongs to the group of chronic obstructive pulmonary diseases, and inpediatric pulmonology is one of the complex diagnoses that require a careful differential diagnosis. Thearticle describes the possible causes of the formation and clinical manifestations of pulmonaryemphysema in children. We present a clinical case of bullous emphysema in a teenager. This case showsthat a detailed examination using such a modern diagnostic method as high-resolution computedtomography played a crucial role in establishing the patient's correct diagnosis. However, establishing thenature of this pathological process in the child was very difficult. Perhaps an earlier diagnosis couldprevent severe irreversible changes in a teenager's lungs would avoid developing the diffusebronchopulmonary process.