States of Matter: Facts. Matter is all around us. Matter is the air you are breathing. Matter is the computer you are reading from now. Matter is the stuff you touch and see. And it is more. Matter is defined as anything that has mass and takes up space.
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.
Lymph nodes are usually a few millimeters in size, and are difficult to feel by touch in their normal condition. However, these tiny lymph nodes become swollen and palpable in cases of infection, cancers, and autoimmune diseases. Some drugs and vaccines can also lead to temporarily swollen lymph nodes. Lymph nodes in the neck are easily palpable when they get swollen.