A 9-year-old girl has lumps in both breasts. Is it precocious puberty?

Patient's question:

My 9-year-old daughter said today that she has lumps in both her breasts. I wonder if it's precocious puberty?

Doctor's answer:

For girls, precocious puberty refers to the development of secondary sexual characteristics before the age of eight, and for girls aged nine, breast development should be considered part of puberty. There are lumps on both breasts. We should consider that breast development is caused by puberty. If you are still concerned, you can ask a local gynecologist to examine whether it is necessary to check for gonadal hormones, bone age, and an ultrasound consultation of the uterus and ovaries to rule out the possibility of precocious puberty. If the bone age matches the actual age, there is no precocious puberty; if the bone age is older than the actual age, it is precocious puberty and requires active treatment.

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