How does histology help in diagnosing tuberculosis (TB)?
In tuberculosis, caused by Mycobacterium tuberculosis, histology reveals granulomas with central caseous necrosis surrounded by epithelioid cells and Langhans giant cells. Ziehl-Neelsen stain is used to identify acid-fast bacilli within the tissue. The granulomas are typically found in the lungs but can also be present in other organs.
