BACKGROUND: A branchial cleft cyst is a lump that develops in the neck or just below the collarbone. These abnormalities form during the development of the embryo and are most often found in children ...

A pilonidal cyst is a sac filled with hair and skin debris that forms at the bottom of your tailbone. The recovery time after surgery depends on the procedure type and if you need stitches. In some ...

Pilonidal sinus—also called a pilonidal cyst—is a skin infection that occurs in or around the crease of your buttocks. This condition happens when hair, skin cells, and dirt clog a hair follicle, ...

Pilonidal cysts typically develop above the cleft of the buttocks. These swollen lumps contain hair or other debris. They occur when small holes in the skin, known as pilonidal sinuses, become ...

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 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 ...