congenital cyst


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congenital cyst

Etymology: L, congenitus, born with; Gk, kystis, bag
a cyst present at birth, such as a dermoid cyst resulting from an embryonic defect in the skin or midline structures.

congenital cyst

A cyst present at birth and resulting from abnormal development, such as a dermoid cyst, imperfect closure of a structure as in spina bifida cystica, or nonclosure of embryonic clefts, ducts, or tubules, such as cervical cysts.
See also: cyst
References in periodicals archive ?
Bronchogenic cysts, usually located in the lung or mediastinum, are due to bronchopulmonary foregut malformations and are relatively common congenital cysts in the mediastinum.
Thyroglossal duct cysts are the most common congenital cysts of the neck.
7) Abnormal separations of developing lung tissue result in the formation of these congenital cysts.
DISCUSSION: Congenital cysts are dysembryogenetic lesions that can occur due to ectodermal elements getting entrapped during midline fusion of mesodermal elements of first and second branchial arches, between 3rd and 4th weeks of intrauterine life.
It may imitate benign and malignant tumours, cysts, abscess, haematoma, pseudocyst and congenital cysts.
Rathke's cleft cysts are congenital cysts that represent remnants of Rathke's pouch, a dorsal invagination of the stomodeal neuroectoderm that ascends from the oral cavity into the sella to form the adenohypophysis.
Secondary bacterial, mycotic or tubercular infection of congenital cysts may produce lung abscess or pneumatocele with loculated pleural effusion.
Congenital cysts of the larynx are an unusual cause of airway obstruction in newborns.

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