What is the cause of a nodule on the left chest?

Patient's question:

In recent days, the left side of my chest has been aching and stuffy, and pressing the fibroid makes it move, causing mild pain. It was detected last November, and it was very small at that time. Now it feels much larger and is shaped like a strip.

Doctor's answer:

Breast nodules are common in women of childbearing age, primarily characterized by cyclical breast pain, which typically resolves on its own after menopause. Most patients experience pain symptoms, often unilateral or bilateral breast hyperplasia, with a long course and slow progression. In some cases, symptoms such as nipple discharge may also occur. Menstrual irregularities, such as reduced volume or pale color, may also be present, accompanied by dysmenorrhea. Some individuals may have no symptoms at all. The main reason is the endocrine imbalance in women, with an unbalanced ratio of estrogen to progesterone, which stimulates excessive breast hyperplasia and incomplete regression.
Recommendations: Regular follow-up at the hospital; pay attention to emotional regulation in daily life; for larger nodules, hormone regulation may be considered. Although breast hyperplasia has no direct relationship with breast cancer, the risk of it progressing to cancer is often higher than in healthy individuals.

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