- The larynx and trachea were normal.
The lungs were oedematous; the right lung weighed 800g, the left lung weighed 650g.
- The parenchyma of both lungs was diffusely congested and was dusky-red in colour but no areas of consolidation were identified macroscopically.
- Fluid could be expressed from the cut surfaces of both lungs, especially the lower lobes. A section was taken for histology (see images). The slide shows alveolar capillaries congested with red blood cells, and leakage of fluid into the alveolar spaces.
This is severe oedema, and could be caused by left ventricular failure which may occur due to heart disease but is also seen in fluid overload.
- Small amounts of mucoid secretion were present within the bronchi.
The pulmonary arteries were normal with no emboli present; however, there were bilateral pleural effusions of about 200ml on each side.