II. Findings
- Dark air density center surrounded by a thick white soft tissue ring-like density
- Cavitary lesions may contain fluid with a distinct air-fluid level
III. Causes
- Necrotizing Pneumonia
- Lung Abscess
- Fungal Pneumonia
- Lung Granuloma (e.g. Tuberculosis)
- Lung tumor
IV. References
- Ouellette and Tetreault (2015) Clinical Radiology, Medmaster, Miami, p. 4-25