Which of the following is a post mortem lesion seen with tuberculosis?

The presence of granulomas is a characteristic post-mortem lesion associated with tuberculosis. Granulomas represent the body's immune response to the Mycobacterium tuberculosis bacteria. When these bacteria infect the lungs, the immune system attempts to contain the infection by forming clusters of immune cells, leading to the development of granulomas. These structures can appear as raised, firm lesions when examined after death and are a hallmark of tuberculosis infection.

Granulomas are formed as a protective mechanism to isolate the bacteria, ultimately attempting to prevent their spread throughout the body. Their presence is a direct indication of pulmonary tuberculosis and provides significant pathological evidence of the disease process in the lungs. In contrast, the other options provided do not specifically relate to the typical lesions produced in tuberculosis. Abscesses, fibrosis, and necrotic liver spots are either associated with other conditions or do not represent the primary pathological findings in tuberculosis cases.