[Congenital lobar emphysema: study of a case].

Congenital Lobar Emphysema (CLE) is a rare malformation of lung development, which may be the cause of respiratory insufficiency in the suckling child. It is produced by the hyperinsufflation of one or more lung lobs with compression of the normal lung parenchyma and contralateral displacement of the mediastinum. Clinical diagnosis is confirmed by simple radiology exams.

[Spontaneous pneumomediastinum: asthma].

Pneumomediastinum is defined as the presence of free air in the mediastinum, and the spontaneous occurs in the absence of diseases or precipitating factors. It is rare in adults, and it is more frequent in newborns. However, it occurs more in young adults, with an 8:1 relationship between men and women.