Morphological patterns of tissue necrosis

Question 1

caceous necrosis

Answer 1

cheesy appearance
structure lost
associated with TB

Question 2

coagulative necrosis

Answer 2

due to lack of oxygen
structure maintained, color change
assoc w/ ischemia

Question 3

Liquefactive necrosis

Answer 3

cellular outline destroyed
accumulation of WBC cuase a thick white-yellow appearance
assoc with bacterial and some fungal infections

Question 4

Fat necrosis

Answer 4

breakdown of fat into fatty acids
tissue maintains structure and looks like flecks of yellow gritty material
assoc w/ pancreatitis

Question 5

gummatous necrosis

Answer 5

tissue is firm w/ gummy center
found in the liver
assoc w/ syphilis

Question 6

fibrinoid necrosis

Answer 6

death of vessel tissue resulting from immune reactions
has bright pink, amorphous fibrin appearance
assoc with vasculitis and malignant hypertension

Question 7

fat suponification

Answer 7

white chalky areas seen in abdomen

indicative of fat necrosis

Question 8

wet gangrene

Answer 8

swelling, blistering, red, wet appearance of tissue w/ foul odor
assoc with bacterial infection of burn injuries and trauma

Question 9

dry gangrene

Answer 9

death due to lack of oxygen, shriveled skin, brown-black

assoc w/ diabetes and autoimmune disorders