Congenital bronchial atresia

A 36-year-old woman presented with complaints of diffuse chest pain persisting for one and a half years. A chest radiograph 6 months prior to this visit showed a smoothly marginated, homogenous opacity silhouetting the right cardiac border (figure 1A). She received a course of antibiotics for suspected pneumonia; however, her symptoms persisted. 2 weeks later, a CT scan of the thorax showed a well-defined soft tissue density lesion of size 4.1×3.3 cm in the medial segment of the right middle lobe with punctate calcifications (figure 1B) and a normal lung parenchyma (figure 1C). She received another course of antibiotics prescribed by her physician. Figure 1 (A) Initial chest radiograph showing a radiopacity with a smooth margin silhouetting the right cardiac border (arrows). (B) Axial CT scan mediastinal window showing the lesion with punctate calcification. (C) Coronal image in lung window showing the well-defined, rounded lesion abutting the right cardiac border. (D) …