congenital

Thyroglossal duct cyst

A thyroglossal duct cyst is a fluid-filled pocket in the front of the neck, typically in the midline. It forms along the pathway that the thyroid gland follows during its early development. Normally, the thyroglossal duct disappears after the thyroid gland reaches its final position in the neck, but in some cases, part of the …
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Congenital nevus

A congenital nevus is a common, non-cancerous skin tumour made up of melanocytes, cells responsible for producing melanin, the pigment that gives skin its colour. Congenital nevi (the plural of nevus) are usually present at birth or develop within the first year of life, which is why they are called “congenital.” Another name for this …
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