Hi, I have gone through your question and understand your concerns.
It is very unlikely that enlarged lymph nodes to be related to
Chiari malformation, so other causes of
swollen lymph nodes should be evaluated.
For this you need to consult your
primary care Doctor.
Symptoms related to Chiari malformation include
headaches worse after coughing or straining, spastic arms and legs, (difficulty walking, working), severe snoring at sleep, difficulty swallowing or choking during meals, wasting of hands and legs muscles,
numbness around mouth etc.
If you experience these symptoms, you need decompressive surgery of posterior fossa to correct Chiari malformation.
If no symptoms, or only slight headaches, you need only follow up.
Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions.