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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.
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.
Ultrasound is the recommended diagnostic modality used to diagnose cervical ectopic thymus. [6] The thymus has a unique appearance on ultrasound, which allows for specific diagnosis. [ 7 ] [ 8 ] Ectopic thymus appears hypoechoic , with characteristic linear echogenic foci. [ 3 ]
Cysts caused by endometriosis, known as chocolate cysts; Hemorrhagic ovarian cyst; Dermoid cyst – the most common non-functional ovarian cyst, especially for women under the age of 30, [11] they are benign (non-cancerous) with varied morphology. [13] They can usually be diagnosed from ultrasound alone. [13]
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.
Ultrasound is used as the first imaging modality, and often shows hypo-echoic, sometimes septated cyst that runs along the sternocleidomastoid muscle. Other imaging techniques such as CT and MRI can also be used. These are more useful for determining the cyst's relationship to the surrounding structures and planning for the surgery. [3]
Ranula in a female. A ranula usually presents as a translucent, blue, dome-shaped, fluctuant swelling in the tissues of the floor of the mouth. If the lesion is deeper, then there is a greater thickness of tissue separating from the oral cavity and the blue translucent appearance may not be a feature.
Benign cyst kidney; radiological appearances mimic renal cancer, A cyst / s ɪ s t / is a closed sac, having a distinct envelope and division compared with the nearby tissue.Hence, it is a cluster of cells that have grouped together to form a sac (like the manner in which water molecules group together to form a bubble); however, the distinguishing aspect of a cyst is that the cells forming ...