Is Biopsy Necessary To Rule Out A Cancer Diagnosis?

Hi, I am a 48-year-old female who had a hysterectomy ten years ago. I have had intermittent sharp, stabbing pain in my lower right side off and on over the last seven or eight years. Lately, it has been a more constant dull, achy pain along with the occasional but more frequent pain. My PPC had me go for a CAT scan with and without contrast and they found a 1.5 cm lesion in my right inguinal area. They then sent me for an MRI with contrast which still came back as indeterminate. They said it is probably a benign tumor or an enlarge lymph node and want to send me for a biopsy. My question is why would I go for just a biopsy? Would a laparoscopy be better because they could still do the biopsy but if they could remove the tumor, they could do it then instead of having to do another procedure afterwards? I would like a second opinion but not sure what type of doctor I would go to for a second opinion. Thank you for your help.