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Pathology · Cell injury: necrosis in cerebral infarction
Sample itemAn occlusion of the middle cerebral artery produces an infarct that becomes soft and cystic over time. Which pattern of necrosis is expected in the brain?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
B. Liquefactive necrosis
Ischaemic injury in the central nervous system characteristically undergoes liquefactive necrosis because enzymatic digestion of dead tissue predominates. Most solid-organ infarcts instead show coagulative necrosis.
Option by option
A. Caseous necrosis
Caseous necrosis is classically seen in tuberculosis.
B. Liquefactive necrosis (correct)
Correct. Cerebral infarcts evolve by enzymatic liquefaction and macrophage clearance.
C. Coagulative necrosis
Coagulative necrosis is typical of infarcts in solid organs such as kidney and heart.
D. Fat necrosis
Fat necrosis occurs after lipase release, such as in acute pancreatitis.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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