Answer - D - Zenker’s degeneration is not seen with coagulation necrosis. It refers to a form of severe hyaline degeneration, or necrosis in skeletal muscle, present in severe infections.
Coagulation necrosis is a type of tissue death that occurs as a result of the blood vessels in an area becoming occluded, or blocked. This leads to a lack of blood flow and oxygen to the affected tissue, resulting in the death of cells. The affected tissue becomes firm and appears white or pale, hence the term "coagulation." This type of necrosis is most commonly seen in solid tumors and is a result of the local accumulation of cancer cells and other factors that disrupt the normal functioning of blood vessels. In some cases, coagulation necrosis can also occur as a result of thermal injury, such as from exposure to extreme heat or cold.
Tuberculosis is a chronic bacterial infection that primarily affects the lungs but can also spread to other body parts. When TB infects the lung tissue, it can cause caseous necrosis, which is characterized by the formation of cheese-like masses of dead tissue. These masses can undergo further changes and become firm, leading to coagulation necrosis.
