Talk to Cancer Specialist / Oncologist on Query Regarding Biopsy

Assalam u alaikum

My mother lymphoma treatment is currently under going As per doctor advice after pet scan Dr ask to do bilateral memogram test after doing the test, and sending report to Dr , he ask for usg tru cut biopsy

Now kindly response where or from whom Dr specificaaly this biopsy can be proceed through

Thanks Kindly reply as ASAP- Zohaib -03005648400