<s>[INST] Hi, I have little lumps along the tendons in my neck and behind my knee and I had one on my jaw line that has seemed to disappear. any idea what they could be? the ones in my neck are sore but thats because i have serious neck strain from computer work but the ones behind my knees do not hurt [/INST] Hi! Thanks for writing to us describing kind of unusual clinical situation of lump in neck and behind the knee.! Here are some possible explanations to these:1. The lump on your jawline that disappeared is a lymph node that was enlarged due to local infection in the throat, salivary glands or oral cavity2. Soreness in the nodule is related to cervical spinal pain not the node itself because nodes are tender only when they are rubbed or has some active infection!3. The painless lump behind your knee is kind of bursa or popliteal cyst could be related to chronic pressure etc.Therefore, see a physician for examination and needle biopsy if necessary for confirmation. Regards, </s>