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.
Dr. David: subcentimeter means smaller than 1cm. subcentimeter means smaller than 1cm. Dr. David: above the heart and between the lungs is an area called the mediastinum where there are normally many many lymph nodes that drain and filter the lymph fluid from the lungs.r. David: so it is completely normal to see lymph nodes in these regions on CT scan where the lymph nodes are less than 1cm in size. so it is completely normal to see lymph nodes in these regions on CT scan where the lymph nodes are less than 1cm in size.