Molecules such as proteins, nucleic acids, and carbohydrates have an affinity for water and are called hydrophilic (âwater-lovingâ). Lipids, however, are hydrophobic (âwater-fearingâ). Some lipids are amphipathicâpart of their structure is hydrophilic and another part, usually a larger section, is hydrophobic.
The high specificity at 10 and 11 mmindicates that lymph nodes of this size are almostalways metastatic in this level.A study of level II lymph nodes shows that for thewhole population a minimum diameter of 8 mm givesa relatively high sensitivity and specificity of 81% and80%, respectively.e found that a minimum axialdiameter of 7 mm for level II and 6 mm for the rest ofthe N0 neck represented the best compromise be-tween sensitivity and specificity. However, the size oflymph nodes was not an accurate predictor of metas-tasis in the N0 neck.
Lymph node. A lymph node or lymph gland, is an ovoid or kidney-shaped organ of the lymphatic system, and of the adaptive immune system, that is widely present throughout the body. They are linked by the lymphatic vessels as a part of the circulatory system. Lymph nodes are major sites of B and T lymphocytes, and other white blood cells. Lymph nodes are important for the proper functioning of the immune system, acting as filters for foreign particles and cancer cells. Lymph nodes do not have a detoxification function, which is primarily dealt with by the liver and kidneys.