Hi,Dear thanks for the query to HCM virtual clinic.
I studied your query in full details updated from you.I understood your health concerns.
Based on your query data, In my opinion ,Dear Your baby seem to suffer from -Right Mammary duct ectasia of the breasts with BND(Bloody
Nipple Discharge)
USG studies with prolactin/estrdiol level and coagulation profile tests are needed to fix the cause of this .
Does not seem to be Cancer,as this complaint in adults would indicate.
No treatment is needed as its self resolving condition in babies and is a part of normal hormonal-acclimatization of baby to the new atmosphere.
Other causes like-Hemorrhagic Cystic
Lymphangioma needs to be ruled out.
If the lump persists or grows in size,Surgical excision could be planned,depending on the severity of situation.
Hope this reply would help you to evaluate your case and treat it with your doctors in time to come.
Hope this would resolve your query and worry and
Anxiety accompanied with it.
Welcome for any further query in this regard to ME.I would love to help you out.
Awaiting for any further query.
Wish you fast recovery from this intriguing health problem.
Have a Good Day.
Dr.Savaskar M.N.
M.S.Genl-CVTS -Senior Surgical Consultant