What Histological Changes Indicate an Infectious Disease?

Histological examination can reveal several changes indicative of infectious diseases, including:

Inflammation: The presence of inflammatory cells, such as neutrophils, lymphocytes, and macrophages, is a common sign of infection.
Necrosis: Tissue death can occur due to severe infection, leading to the presence of dead cells and cellular debris.
Granuloma Formation: This is a chronic inflammatory response characterized by the aggregation of macrophages, often seen in infections like tuberculosis.
Pathogen Presence: Direct visualization of pathogens, such as bacteria, viruses, or fungi, within tissue samples can confirm an infectious disease.