inflammation of the lymph nodes can be caused by what
Lymphadenopathy Lymphadenopathy or adenopathy is disease of the lymph nodes, in which they are abnormal in size, number, or consistency.[1] Lymphadenopathy of an inflammatory type (the most common type) is lymphadenitis,[2] producing swollen or enlarged lymph nodes. In clinical practice, the distinction between lymphadenopathy and lymphadenitis is rarely made and the words are usually treated as synonymous. Inflammation of the lymphatic vessels is known as lymphangitis.[3] Infectious lymphadenitides affecting lymph nodes in the neck are often called scrofula.
Lymph node Thin reticular fibers of reticular connective tissue, and elastin form a supporting meshwork called a reticulin inside the node. B cells are mainly found in the outer (superficial cortex) where they are clustered together as follicular B cells in lymphoid follicles and the T cells are mainly in the paracortex.[6] The lymph node is divided into compartments called lymph nodules (or lobules) each consisting of a cortical region of combined follicle B cells, a paracortical region of T cells, and a basal part of the nodule in the medulla.[7]