8. Chronic Passive Venous Congestion of the Lung - Gross
Caused by any chronic condition that retards the outflow of pulmonary
venous blood from the lungs to the left side of the heart, e.g.,
chronic mitral valve stenosis. Pooling of blood in the lung
capillaries and associated micro-hemorrhages produce a dark brown
discoloration, noted here. In addition, septal fibrosis causes the
lung to become stiff. The fibrosis causes the lung to feel firm to
the touch; also, the fibrosis causes the cut edges to be raised or
stand up. What is the brown pigment that is derived from
hemoglobin?
Answer
Copyright © 1999 by W. B. Saunders Company
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