• Benign: refers to a condition, tumor, or growth that is not cancerous. It does not spread to other parts of the body or destroy nearby tissue.
• Serous Layer: The layer which produces serum, which is a protein-rich fluid.
• Mucous Layer: The layer which secrets mucus.
• Intra-Mural: It means within the wall.
• Immune System: The system of organs and processes of the body that provide resistance to and protection from infection and toxins. Organs include thymus, bone marrow, and lymph nodes.