Complex sentence: It is usually applied to a condition marked by induration (swelling or hardening of normally soft tissue) of a normally aerated lung through accumulation of inflammatory cellular exudate in the alveoli and adjoining ducts.
Split into simpler sentences: It is usually applied to a condition marked by induration (swelling or hardening of normally soft tissue) of a normally aerated lung. Consolidation appears through accumulation of inflammatory cellular exudate in the alveoli and adjoining ducts.