Dear user ,
thank you for reaching out for advice regarding your health concern. answering your question directly if you want to do biopsy
for it mind as well to remove it totally . but for two reasons i would recommend you to forget about it , first reason that your doctors already examined it and they don't suspect anything malignant , second reasons its getting smaller in size and that is a very strong sign that its not malignant or worrisome. if its getting more concerning for you , what you could do is to do another ultrasound
by the end of this year and then decide if you want to remove it or not, keep in mind that its always better to avoid surgery and its anesthesia
please rate if you found the answer helpful.
Ahmad , MD