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Kaplan Qbank USMLE



Author5 Posts
  #1

Which of the following types of necrosis does Streptococcus pyogenes cause?
A) Caseous
B) Ligeufactive
C) Coagulative

Thanks. Please explain why.

  #2

Dude This is simple Liquefactive Necrosis only occurs when there is a Superinfection with an Anaerobic Organism such as Wet Gangrene or Cerebral Infarction. Come up with the Complete Question Which was Given to the Examinee Otherwise Coagulation Necrosis is the Answer. Thats Path 101

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FORUM RULES-- Those who believe in telekinesis, raise my hand. I get enough exercise just by pushing my luck --P4U World.." The pure and simple truth is rarely pure and never simple."

  #3

It is liquefactive necrosis according to the question stated. Liquefactive necrosis occurs in all pyogenic infection or organ infarction in some like brain. Coagulative necrosis generally results from solid organ infarction and has the dead cells with outlines preserved. In liquefactive necrosis there is no such cell outline preservation. Pus formation is as a result of liquefactive necrosis and seen in pyogenic(pus forming) infection such as strep pyogenes. but if necrosis is due to immunological cross-reactivity to strep pyogenes, the answer may change. So, the complete question is needed to get the correct answer.

  #4

yes liquefactive necrosis...inflammatory(neurtophils)

  #5

Liquefective necrosis as it has Anti DNAse which liquefies pus........

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