A 14-16 yr old 10 swollen lymph nodes .5-1.5 cm and 1 big one 2.5 all very soft and moveable. docs say they fine. go down with antibiotics then big?

Biopsy: My rule of thumb for a persisting enlarged lymph node greater than 1 CM diameter, particularly if it remains nontender, is to have it biopsied. This is especially true if there is no present signs or symptoms of infectious process. However i might try a course of antibiotics such as Dicloxacillin before doing this.

Monitoring Centers: Lymphatic system absorbs/carries things too big to go into the arteries/veins like bacteria eaten by white cells/digested food. Lymph nodes "taste" the lymph everywhere for bad stuff like bacteria/viruses/cancers, etc. When it detects a problem, it alerts the immune system and your body reacts. They enlarge in response to the inflammation they create when they react. They shrink when all is well.