Final answer:
The most likely diagnosis for a 36-year-old woman experiencing milky secretions from both nipples is pituitary tumor.
Step-by-step explanation:
The most likely diagnosis for a 36-year-old woman who is not pregnant and experiencing milky secretions from both nipples is pituitary tumor.
Pituitary tumors can cause an overproduction of prolactin, which is the hormone responsible for milk production. Excessive prolactin levels can result in unexpected milk production, even in non-pregnant women.
Other possible causes of milky secretions from non-pregnant women's nipples include certain medications, hormonal imbalances, and certain medical conditions.