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A dermoid cyst 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.
Congenital dermal sinus is an uncommon form of cranial or spinal dysraphism. [2] [3] It occurs in 1 in 2500 live births. [3]It occurs as a dermal indentation, found along the midline of the neuraxis and often presents alongside infection and neurological deficit. [2]
Dermoid cyst; Diffuse neonatal hemangiomatosis; Encephalocele; Familial disseminated comedones without dyskeratosis [42] Focal facial dermal dysplasia; Hutchinson's teeth; Hyperkeratotic cutaneous capillary-venous malformation; Intrauterine epidermal necrosis; Limb–mammary syndrome; Lowry–MacLean syndrome; Macrocheilia; Macrocystic ...
682.4 Cellulitis/abscess, hand; 682.5 Cellulitis/abscess, buttock; 682.6 Cellulitis/abscess, leg; 682.7 Cellulitis/abscess, foot; 682.9 Cellulitis/abscess, unspec. 683 Lymphadenitis, acute; 684 Impetigo; 685 Pilonidal cyst. 685.0 Pilonidal cyst w/ abscess; 685.1 Pilonidal cyst, unspec. 686 Other local infections of skin and subcutaneous tissue ...
A dermoid cyst is a mature cystic teratoma containing hair (sometimes very abundant) and other structures characteristic of normal skin and other tissues derived from the ectoderm. The term is most often applied to teratoma on the skull sutures and in the ovaries of females.
C. Calcifying epithelioma of Malherbe; Capillary hemangioma; Cephalic brain-like heterotopia; Cervical accessory tragus; Congenital absence of skin; Congenital auricular fistula
Relative incidence of cutaneous cysts, where epidermoid cysts constitute a plurality (blue area). An epidermoid cyst or epidermal inclusion cyst [1] is a benign cyst usually found on the skin. The cyst develops out of ectodermal tissue. Histologically, it is made of a thin layer of squamous epithelium.
The cyst wall is composed of squamous epithelium (90%), columnar cells with or without cilia, or a mixture of both, with lymphoid infiltrate, often with prominent germinal centers and few subcapsular lymph sinuses. The cyst is typically surrounded by lymphoid tissue that has attenuated or absent overlying epithelium due to inflammatory changes.