A branchial cyst, also known as a branchial cleft cyst or cleft sinus, is a congenital lump that forms in the neck or collarbone area. Doctors say even though it may be present at birth, the cyst ...

Updated on: October 16, 2024 / 11:17 AM EDT / CBS News ...

A branchial cyst, a.k.a. a branchial cleft cyst, is a small, fluid-filled sac that an look like a lump under the skin on the side of your neck, according to the Cleveland Clinic.

By Matias Grez, CNN (CNN) — Tennis legend Serena Williams says she recently underwent surgery to remove a branchial cyst “the size of a grapefruit” from her neck. Williams said she found the ...

The Cleveland Clinic describes branchial cleft cysts as “small fluid-filled sacs that may look like lumps under your skin on the side of your neck.” As the cyst “kept growing,” Williams ...

The cyst can also become infected and form an abscess, or a painful, puss-filled pocket. Once branchial cysts begin growing, doctors will advise immediate removal to prevent further infection.