Figure 12. A 20-year-old woman who had received treatment for pulmonary tuberculosis 4 years earlier was investigated for secondary infertility. A plain radiograph of the chest revealed a giant emphysematous bulla with atelectasis of the left lower lobe. CT reveals an extrapleural mass with a small nodular focus of calcification adjacent to the inner aspect of the upper rib cage. There is no evidence of bone erosion.