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Tracheotomy ( / ˌtreɪkiˈɒtəmi /, UK also / ˌtræki -/ ), or tracheostomy, is a surgical airway management procedure which consists of making an incision (cut) on the anterior aspect (front) of the neck and opening a direct airway through an incision in the trachea (windpipe). The resulting stoma (hole) can serve independently as an airway ...
Pharyngeal pouch (embryology) Pattern of the branchial arches. I-IV branchial arches, 1–4 pharyngeal pouches (inside) and/or pharyngeal grooves (outside) Floor of pharynx of human embryo about twenty-six days old. In the embryonic development of vertebrates, pharyngeal pouches form on the endodermal side between the pharyngeal arches.
Branchial arch. Branchial arches, or gill arches, are a series of paired bony "loops" that support the gills in fish. As gills are the primitive feature of vertebrates, all vertebrate embryos develop pharyngeal arches, though the eventual fate of these arches varies between taxa. In jawed fish, the first arch pair (mandibular arches) develops ...
This cyst typically doesn't cause symptoms, but, if large enough, it may cause vision loss, bitemporal hemianopsia, blurry vision, and dulled color vision. Clinical significance. Rathke's pouch may develop benign cysts. Craniopharyngioma is a neoplasm which can arise from the epithelium within the cleft. Eponym
Ultimopharyngeal body. The ultimopharyngeal body, or ultimobranchial body or ultimobranchial gland is a small organ found in the neck region of many animals. In humans, it develops from the fourth pharyngeal pouch into the parafollicular cells of the thyroid to produce calcitonin. It may not develop in DiGeorge syndrome .
Ectopic thymus. Ectopic thymus is a condition where thymus tissue is found in an abnormal location. It usually does not cause symptoms, but may leads to a mass in the neck that may compress the trachea and the esophagus. It is thought to be the result of either a failure of descent or a failure of involution of normal thymus tissue.
Branchial cyst (branchial cleft cyst) Bronchogenic cyst; Capillary hemangioma (infantile hemangioma, nevus maternus, strawberry hemangioma, strawberry nevus) Cavernous venous malformation; Congenital cartilaginous rest of the neck (cervical accessory tragus, wattle) Congenital erosive and vesicular dermatosis
Pseudo-goitre. Pseudo-goitre is the apparent fullness of the front part of the neck. It may be mistakenly diagnosed as thyroid enlargement. The cause for pseudogoitre can be fat tissue of the neck, cervical lordosis, cervical masses (such as cervical lymphadenopathy, branchial cleft cyst, pharyngeal diverticulum) or high lying thyroid or trachea.