LUNG - Fibrocaseous tuberculosis

The upper lobe of this lung shows extensive cavitating tuberculosis at the apex and anteriorly. There are also solid areas of tuberculosis apparent. That some of these cavities have contained caseious material can be seen from the granular appearance of the lining. There is a further tuberculous lesion at the apex of the lower lobe. Although there are some solid areas present, the histology of the lesion does not show tuberculous bronchopneumonis. Acid-fast bacilli were very numerous in the cavities.