What is Ranne complex?
Correct Answer: Necrotic material undergoing calcification
Description: The central part of the TB lesion contains caseous, soft, and cheesy necrotic material (caseous necrosis). This necrotic material may undergo calcification at a later stage called Ranne complex, in the lung parenchyma and hilar lymph nodes in few cases.
Key concept:
Necrotic material undergoing calcification which is seen in TB is known as Ranne complex.
Ref: Shafer's textbook of oral pathology 7th edition page 320
Category:
Pathology
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