This is a caseating granuloma. Epithelioid cells surround a central area of necrosis that appears irregular, amorphous, and pink.Grossly, areas of caseation appear cheese-like.

 
  • 图示干酪样肉芽肿,中央是不规则,无结构,粉红色的坏死物,类上皮细胞分布在周围。坏死物看上去很像干酪。
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