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.
The rash can grow to over 20 cm in diameter, and the specificity of this sign for the diagnosis of Lyme disease is probably improved with increasing diameter of the rash (a minimum diameter of 5 cm is suggested by the Centers for Disease Control for diagnosis).