Cystic Bronchiectasis and Tuberculosis, Confirmed by Operation
Radiologic and Pathologic Findings
Chest radiographs: A well-defined, 9 cm
in long diameter, lobulated contoured mass opacity in left anterior mediastinum.
Chest CT scan: A well-defined, cystic
lesion with irregular calcified rim in left anterior mediastinum. 
The large cystic lesion was
considered as anterior mediastinal lesion radiologically, but the lesion was
intrapulmonary lesion in operation and pathology..
Brief Discussion
Bronchiectasis in postprimary tuberculosis can develop by
two mechanisms:
1) Destruction and fibrosis of lung parenchyma, resulting in
retraction and irreversible bronchial dilation.
2) Cicatricial bronchostenosis secondary to localized
endobronchial infection, resulting in obstructive pneumonitis and distal
bronchiectasis.