I have 4 and 5mm internal iliac nodes lighting up on my last PET/CT?

I have 4 and 5mm internal iliac nodes lighting up on my last PET/CT. Are they too small for fine needle aspiration. I am 3 months post colorectal cancer treatment. The original tumor is no longer evident. I have concern about metastasis.
Thanks

FIND THE BEST DOCTORS NEAR YOU

Cardiologists – Cosmetic Surgeons – Dermatologists – Ear, Nose and Throat Specialists – Gastroenterologists – Gynecologists/Obstetricians – Neurologists – Oncologists – Orthopedic surgeons – Pediatricians – Psychiatrists – Pulmonologists – Urologists