Fig. Axial CT image shows a 'hole' in the lung with air-fluid level (arrow), surrounded by ground glass opacity (arrowheads) in a trauma patient. Findings represent pulmonary laceration surrounded by contusion.
- Laceration in the lung tissue results in a 'hole' instead of a linear tear because of elastic recoil of the lungs stretching the tear.
- Most lacerations in an acute phase contain blood and air (hematopneumatocele).
- Most lacerations are surrounded by contusion.
- Four types of lung laceration include compression rupture (central location), compression shear (paravertebral), rib penetration tear (near rib fracture) and tear associated with underlying lung fibrosis.
- Most common type of pulmonary laceration is a compression rupture tear.
Kaewlai et al. MDCT of blunt thoracic trauma. RadioGraphics 2008 (October)