|

Expert Iconexpert advice MORE

Breast Lump on Boy

Pediatrics Expert Advice from Shari Nethersole, M.D.

Q: My 11 - year-old son found a small hard lump under his nipple. The doctor said it was normal and that it could switch back and forth. Could you give me more information on this and what changes I need to look for should they occur?

A: It is very common for young boys who are going through puberty to have some swelling or enlargement of the breast tissue under the nipple. This is the case for approximately 70 percent of adolescent boys. It usually occurs on both sides, although it can occur on just one breast.

The cause is the hormonal changes that occur during adolescence. There is a slight imbalance between testosterone and estrogen production for a short period of time. It is not clear why it sometimes affects one breast more that the other. Usually, this breast enlargement regresses (goes back down) as the other pubertal changes progress. There are no special treatments needed. If there is any discharge from the nipple, or if your son is not showing signs of going through puberty, then further evaluation could be needed.

There are reports of breast cancer in men, but it is extremely, extremely rare in adolescent boys, and I would not worry about this.

More on: Expert Advice

Shari Nethersole is a physician at Children's Hospital, Boston, and an instructor in Pediatrics at Harvard Medical School. She graduated from Yale University and Harvard Medical School, and did her internship and residency at Children's Hospital, Boston. As a pediatrician, she tries to work with parents to identify and address their concerns.


Please note: This "Expert Advice" area of FamilyEducation.com should be used for general information purposes only. Advice given here is not intended to provide a basis for action in particular circumstances without consideration by a competent professional. Before using this Expert Advice area, please review our General and Medical Disclaimers.

highlights

Happy Surfing! 5 Safe Search Engines for Kids
These safe search engines for kids offer pre-screened sites and age-appropriate filters and content, so your child can have the freedom to browse the Internet while you have peace of mind that he's safe online.

Find Today's Newest & Best Children's Books!
Looking for newly released books for your child? Try our new Book Finder tool to search for new books by age, type, and theme, and create reading lists for kids!

Best School Supplies of 2015
It's time to stock up on the latest and greatest school supplies! Make sure your child has all the trendy accessories and must-have classroom staples he needs.

Ready for Kindergarten?
Try our award-winning Kindergarten Readiness app! This easy-to-use checklist comes with games and activities to help your child build essential skills for kindergarten. Download the Kindergarten Readiness app today!

stay connected

Sign up for our free email newsletters and receive the latest advice and information on all things parenting.

Enter your email address to sign up or manage your account.

Facebook icon Facebook icon Follow Us on Pinterest

editor’s picks