You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the following is the most characteristic feature of Adult Respiratory Distress Syndrome (ARDS)? and explain in detail?
Both Adult Respiratory Distress Syndrome (ARDS) and Acute lung injury(ALI) are associated with inflammation associated-increases in pulmonary vascular permeability, oedema and epithelial cell death. The histologic manifestation of these diseases is diffuse alveolar damageIn the acute stage, the lungs are heavy, firm, red, and boggy. They exhibit congestion, interstitial and intra-alveolar oedema, inflammation, fibrin deposition, and diffuse alveolar damage.Ref: Robbins 9e pg: 673