- Study guides, Class notes & Summaries

T/F: Centriacinar emphysema is located in the lower lung and panacinar emphysema is located in upper lobe regions of lung. - Answers-False, it is the opposite, Centriacinar - upper; Panaciner - lower What is the theory proposed for the pathogenesis of emphysema? - Answers-Excess of the enzyme lysosomal elastase is released from neutrophils in the lung. This results in the destruction of elastin and type IV collagen that are both important molecules for the integrity of lung tissue. T/F: In...

What is the etiology of cardiac pulmonary edema - Answers-L ventricle is unable to pump blood adequately (like in L side heart failure) > pressure increases inside L atrium > then in pulmonary veins/capillaries > fluid pushed through capillary walls into alveoli What is the etiology of non-cardiac pulmonary edema - Answers-luid leaks through capillaries w/in alveoli due to increase permeability - results from pnemonia, toxins, medications, smoke inhalation, respiratory ditress syndro...

* central areas of hemorrhage, necrosis or cavitation. -Cavitation results from central necrosis and is seen in about 10% of all cases. -SCC is the lung cancer that is MOST LIKELY TO CAVITATE. -Because of location near the hilum, cavitary lesion may break through an adjacent wall of a bronchus. -Such an event may result in large amounts of blood filling the bronchus. -This is potentially lethal wherein the cause of death is generally from aspiration and not exsanquination. Lung C...