Hi thanks for your question.
Lump on the top of pubic bone diagnosed as lymph
node. Yes most probably this lump could be lymph node as this is the common site for lymph nodes. Get FNAC of this lump done by a pathologist to confirm / rule out this lump as a lymph node. If it doesn't bother you, you can leave it as such. However if it bothers you ,like it is painful or has other symptoms get it removed by a general surgeon
Hope this answers your question