Acute interstitial pneumonitis shows the histopathologic appearance of diffuse alveolar damage. On gross examination, lungs appear firm, heavy and have a dark red or beefy appearance and show irregular areas of consolidation and fibrosis. On microscopic examination, acute interstitial pneumonitis shows  bilateral, temporal uniformity of the diffuse alveolar damage, hyaline membrane deposition and extensive fibroblastic and myofibroblastic proliferation.
Hamman-Rich syndrome pathophysiology
Fournier gangrene pathophysiology
Clubbing pathophysiology
Adams-Stokes syndrome pathophysiology
Acute tubular necrosis pathophysiology
Contrast induced nephropathy pathophysiology
Adrenal hemorrhage pathophysiology
Renal papillary necrosis pathophysiology