Hello,
I had an ultrasound done after 2nd chemo treatment for ER+/HER2+ and the tumor shrunk from 2.7 cm to 9mm. I was thrilled. Next ultrasound after 4th treatment only shrunk another 2mm. Did the treatment stop working? I think I convinced myself it would be gone. So disappointed and feeling discouraged. Anyone else have a similar response? How did things end up after surgery?