My wifes stereotactic biopsy was done on wrong location should the doctor be held accountable?

Sometimes: In general biopsy of a lesion is confirmed by imaging prior to and even sometimes during the procedure. However, even with these precautions sometimes the lesion is missed. In addition, sometimes there are multiple lesions, in those cases the physician must chose which he believes gives the best chance of obtaining a diagnosis. Speak with the physician and ask what why the location was changed.