Microscopic Appearances of Tuberculosis

Necrotizing granulomas:

Extensive necrosis

Extensive necrosis

Non-necrotizing granulomas:

Acute inflammation only:

Granulomas with apoptotic bodies:

Bronchocentric tuberculosis:

Tuberculous pulmonary vasculitis:

Pulmonary artery

Pulmonary vein

Healed fibrocalcific lesions:

ACID FAST STAINS - ZIEHL-NEELSEN

All at 400X original magnification

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Click on thumbnail image to view full-size image

Click on thumbnail image to view full-size image

Single bacillus in necrotic area

Several bacilli in necrotic area

Numerous bacilli in giant cell

Single bacillus in giant cell

Single bacillus in giant cell

Numerous bacilli in necrotic area

Auramine fluorescent stain. Click here for WebPath © image

Click here for microscopic images of Miliary tuberculosis.

Suppurative necrosis: