A. Lung Abscess
Image shows: Frontal chest radiograph showing air-space opacification in the right lung with cavitating lesions (arrows)
due to caseous necrosis in tuberculosis.
- The cavitation and air-fluid level within the opacity represents caseous necrosis in tuberculosis.
- The involvement of the apex is a clue towards the diagnosis of TB as post-primary TB has a predilection for the lung apex
- Other radiological findings of pulmonary TB not seen in this patient include:
- Enlarged hilum – representing granulomatous inflammation of lymph nodes, usually in primary TB
- Fibrocalcific changes in lung apex usually representing healing of previous TB infection
- Multi-focal air-space opacities representing bronchogenic spread of infection .
- Tiny miliary nodules in both lungs representing miliary TB due to haematogenous spread of infection