To my knowledge, this is the first probable second branchial cleft cyst we have found. However, it is possible there have been others that we did not recognize at the time.

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.

Congenital lesions account for more than half of excised cervical masses in children; 20% of them are branchial cleft anomalies, including cysts, sinuses and fistulas. 1 Second branchial cleft lesions ...

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.

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 ...

Branchial cleft cysts are sacs filled with fluid found in the neck and can appear as lumps or swelling under the skin. They can range from one centimeter to 10 centimeters (almost four inches) in ...

According to the Cleveland Clinic, it's unknown how common branchial cleft cysts (ones found on the side of the neck) are. "That's because not all branchial cleft cysts cause problems.