Risk of Lymphoedema following skin cancer punch biopsy?

I was diagnosed in June 2018. I had 6 months of chemo, then surgery, followed by 3 weeks of radiation.
I have avoided needles and having blood pressure measured from the arm where the nodes were removed.
I now have a suspected squamous cell carcinoma under my index fingernail and a suspected melanoma on that arm.
I have been referred on to a dermatologist as the skin cancer specialist at the clinic was reluctant to do it due to risk of lymphoedema. Anyone had anything similar?