A biopsy is taken of a patient’s thoracic lymph node via endobronchial ultrasound (EBUS)
A biopsy is taken of a patient’s thoracic lymph node via endobronchial ultrasound (EBUS). Hematoxylin and eosin staining of the specimen shows granuloma with central necrosis.
Which mode of hypersensitivity accounts for this appearance?
Select the SINGLE most appropriate option from the list below. Select ONE option only.
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