A 29-Year-Old Lady Visits the Clinic Because She Has Been

A 29-year-old lady visits the clinic because she has been experiencing sporadic nappy discharge for the previous few weeks. She hasn't experienced a fever or breast soreness. Despite having unprotected sexual contact, the patient has never become pregnant. She hit menarche at the age of twelve. The patient's menstrual periods reduced to 2- to 3-month intervals starting a year ago and ended altogether six months later. She does not use any drugs and has no further medical issues. At the age of 60, the patient's mother was found to have metastatic breast cancer; she recently passed away. 31 kg/m² is the BMI. On physical inspection, both nipples are expressing white discharge. The rest of the physical examination is conducted within typical bounds. Testing for -hCG in urine is negative. Which of the following is the most likely diagnosis in this patient?

A) Fibroadenoma
B) Fibrocystic changes of the breast
C) Galactocele
D) Inflammatory breast carcinoma
E) Intraductal papilloma
F) Lobular breast carcinoma
G) Paget disease of the breast
H) Pituitary adenoma