A branchial cleft cyst is a type of birth defect in which a lump develops on one or both sides of your child’s neck or below the collarbone. This type of birth defect is also known as a branchial ...

A branchial cleft cyst is a birth abnormality that occurs on one or both sides of the neck. This atypical tissue may form fluid-filled sacs or passages that drain fluid on the neck surface. These ...

A branchial cleft is also called a cleft sinus. It is a lump or cyst that develops in your neck or near your collarbone. It develops in the womb before birth and is usually diagnosed shortly after ...