Use this term in a sentence. â 1  The certificate of analysis was in and we were all wondering exactly what it meant and how it worked for us. â 2  Our new frozen pizza was reviewed by the FDA and after a few days, we received a certificate of analysis describing the issues they had with our manufacturing process.
1 A rare cause of axillary swelling may be breast cancer or lymphoma. 2  The lymph nodes in the groin (femoral or inguinal lymph nodes) may swell from an injury or infection in the foot, leg, groin, or genitals. 3  In rare cases, testicular cancer, lymphoma, or melanoma may cause a lump in this area.ymph nodes are small, bean-shaped glands throughout the body. They are part of the lymph system, which carries fluid (lymph fluid), nutrients, and waste material between the body tissues and the bloodstream.
Lymph nodes are bean-shaped structures about 0.1 â 2.5 cm in length. The node is enclosed in a capsule and has an indentation on one surface (along one of its long axes) known as the hilum. The hilum is the point at which arteries carrying nutrients and lymphocytes enter the lymph node and veins leave it. Afferent lymphatic vessels enter the lymph node through the capsule peripherally and efferent lymphatic vessels leave the node via the hilum.