U.S. doctors online nowAsk doctors free
A member asked:

why should i have surgery if my biopsy was negative? the results of my needle biopsy were negative, but my doctor still wants to operate to take out the lump. why?

3 doctor answers4 doctors weighed in
Dr. Lesley Meng
Medical Oncology 23 years experience
Biopsies : Biopsies are not always accurate. Unfortunately the results depend on the position of the needle. Cancer is not visible if it is microscopic and the physician performing the biopsy can only use their expertise as much as possible. When biopsies are negative or inconclusive, excisional biopsies are recommended which remove a bigger piece of tissue thus translating to a better chance of obtaining a true answer as to the diagnosis.
Dr. Boris Aronzon
Anesthesiology 24 years experience
Ask him: Difficult to know from the information provided. The best think is to ask your surgeon or get 2 nd opinion.
Dr. Jim Huehnergarth
Pathology 51 years experience
A needle biopsy must explain abnormal findings seen on imaging and explain the clinical concern. If not, repeat or open biopsy is indicated
Feb 10, 2013
Dr. Michael Gabor
Diagnostic Radiology 33 years experience
Biopsy: You should ask your doctor to explain. I can only speculate that perhaps the pathology results did not explain the abnormality(discordance). In other words, if you have an actual mass, the path results(benign or mailgnant) must be able to account for the mass. If it is just 'benign breast tissue', that is not a sufficient explanation for a mass, and re-needle biopsy or excision is needed.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
24/7 visits
$15 per month

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
24/7 visits
$15 per month
Last updated Oct 3, 2016

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.