In the accompanying low power photomicrograph of lung from a patient with tuberculosis,the eosinophilic area labelled "CN" in the centre of the lesion depicted is best described by which one of the following words or statements?

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This photomicrograph shows the classic appearance of caseous necrosis in a case of tuberculosis.Suppurating granulomas have neutrophils in the middle,whereas in caseous necrosis the pink centre is usually completely acellular.The overall lesion is a granuloma,and is sometimes referred to as a caseating granulomA

In the Accompanying Low Power Photomicrograph of Lung from a Patient