A<unk>  is a teratoma of a cystic nature that contains an array of developmentally mature, solid tissues. It frequently consists of skin, hair follicles, and sweat glands, while other commonly found components include clumps of long hair, pockets of sebum, blood, fat, bone, nail, teeth, eyes, cartilage, and thyroid tissue. As<unk> s grow slowly and contain mature tissue, this type of cystic teratoma is nearly always benign. In those rare cases wherein the<unk>  is malignant, a squamous cell carcinoma usually develops in adults, while infants and children usually present with an endodermal sinus tumor.
Dermoid cyst
Teratoma
Epidermoid cyst
Branchial cleft cyst
Hidradenoma
Nabothian cyst
Papillary hidradenoma
Dentigerous cyst