Get proper course of antibiotics.. And if she is breastfeeding mother then evacuate milk completely... No need for any local application of ointments or any other..

Whether surgery or an FNAC (Fine Needle Aspiration Cytology) is required depends entirely on the specific characteristics of the lump found during a physical examination and imaging (such as an Ultrasound or Mammogram). In the report attached, it suggests an abscess right breast. You must consult a general surgeon for the following:-- 1. Clinical Examination. 2. Imaging. 3. Tissue Sampling (FNAC or Core Needle Biopsy). * After the necessary examination and investigations, in your case, a surgical procedure is definitely indicated, which could be surgical exploration under anesthesia, and the lump removed and sent for culture sensitivity and histopathology examination.

Get fnac done

Your ultrasound report itself describes this as a likely partially liquefied abscess, not a plain lump, which changes how it's usually managed.

Go directly to general surgeon might need incision and drainage

Usg report says .. its partially liquefied abscess such conditions and clinical correlation, don't need to go for FNAC . Its infective condition and need to go for incision and drainage.