I am surprised that you did not take her for the ultrasound
when the lump was large ... what has prevented you from doing this? It seems that the lump may be a cyst
... a water-filled swelling. Could you shine a small pointed light into it and see if the light radiates out from the point of shining ... if yes, it would be confirmatory that it is a cyst. It would need to be excised by surgery. There is no other treatment.
- Dr. Taher