This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Which of the following is not a feature of red infarction? September 2010 
Select and explain. 
A. Venous occlusion, B. Occurs in organs having dual circulation, C. Occurs in solid organs, D. Occurs in previously congested tissues
C: Occurs in solid organs
Answer: C: Occurs in solid organs 
Explanation: Ans. C: Occurs in solid organsRed infarctions (hemorrhagic infarcts), generally affect the lungs or other loose organs (testis, ovary, small intestines). The occlusion consists more of red blood cells and fibrin strands.Characteristics of red infarcts include: occlusion of a vein; loose tissues that allow blood to collect in the infarcted zone; tissues with a dual circulatory system (lung, small intestines); tissues previously congested from sluggish venous outflow; and reperfusion (injury) of previously ischemic tissue that is associated with reperfusion-related diseases such as - Myocardial infarction, stroke (cerebral infarction), shock-resuscitation, replantation surgery, frostbite, burns and organ transplantation.