A 69 year old man with poorly controlled diabetes mellitus and peripheral arterial disease presents with a black painful right foot after several days of worsening toe discoloration. The distal tissue is dry and shriveled, but part of the lesion becomes foul smelling with purulent drainage after several days in the hospital. Which of the following best describes the pathologic process now present in this foot?
- A)Pure coagulative necrosis without bacterial superinfection
- B)Fat necrosis due to pancreatic enzyme release
- C)Dry gangrene complicated by superimposed liquefactive necrosis from infectionGABARITO
- D)Fibrinoid necrosis due to malignant hypertension
- E)Caseous necrosis due to granulomatous inflammation
Explicação
Ischemic tissue in an extremity initially develops dry gangrene, which is essentially coagulative necrosis. When bacterial infection supervenes, enzymatic digestion and pus formation create wet gangrene, adding a liquefactive component as suggested by the foul... Ver explicação completa e trilha adaptativa →