There are different types of local anesthetics used for lipoma removal. The numbness from longterm anesthetic should wear off within 24 hours at the most. Best, Dr. Karamanoukian#Realself100 Surgeon
Lipomas can occur after tissue trauma. Surgical removal is relatively simple if performed early in its development. Best, Dr. KaramanoukianRealself100 Surgeon
Lymph nodes are reactive and may enlarge in response to an infection, injury or more serious issue such as cancer. It is doubtful that a longstanding lipoma would cause enlargement of a lymph node unless it was infected or recently injured (scratched for example). I recommend you get both lumps...