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.
In addition, increase in size is not always pathologic; some nodes are bigger than other normally (e.g compare jugulodigastric nodes, to mesenteric nodes), and reactive nodes are a healthy response and do not imply pathology of the node itself.lthough 3 mm had been used as the upper limit for the short axis diameter or mesenteric lymph nodes, up to 39% of healthy normal patients have larger nodes than this. As such a figure of 5 mm is considered normal 6 (see normal mesenteric lymph nodes).