Is it possible to detect the difference between an enlarged duct due to nursing vs. a tumor (benign or cancerous)?
A milk duct would likely change in size over time depending on when breastfeeding has occurred, while a tumor would not vary widely in size over such a short duration of time. If you have concerns about any lumps in your breasts you should consult with your primary care provider who is trained to detect the differences between different kinds of breast lumps.