If the reports are uploaded, it would be great. Is the biopsy reported as papillary carcinoma. This is a subtype of IDC. “Papillary lesion” is unclear terminology.
If BIRADS comes as 5, then it is highly likely to be malignant.
Your doctor will clarify the pathology report with the reporting pathologist and then plan further.
Size of the lesion, any other DCIS seen in the mammogram, any nodes on ultrasound - please check in the report.
Also an IHC will be asked to be performed on the biopsy report, which will help for clarification.
If in doubt, a core biopsy can be done again from the lesion or lymph node.
Next Steps
Treating physician to discuss with pathologist