Risk Factors And Causes Of Earlobe Cysts

Presence of A Genetic Disorder Or Other Rare Syndrome

Gene-related cystic syndromes relate to specific genes and to their effect on normal fetal development. Branchiootorrenal syndrome involves tissues developing within the second branchial arch that do not follow normal patterns. Malformations may affect the pinna and preauricular pitting may not involve the earlobe proper. Pitting and subsequent cyst development may be sufficiently large to impact the pinna structures as the growing cyst migrates into adjacent structures. Epidermoid cysts (some genetic) show a similar pattern of potential growth, arising behind the earlobe and growing into its space. The mechanism or presence of a genetic disorder or another rare syndrome may be clouded, but sebaceous cysts do appear in families. One child in 6800 newborns will have external ear deviations. One in ten thousand will have severe external ear malformations. They tend to occur on the right side and may extend from pinna to external auditory meatus to middle ear to the cochlea and vestibular systems and to the seventh and eighth nerves. Genetic syndromes may underlie surface malformation, or the abnormality may develop spontaneously. Grading of type and degree of dysplasia has been suggested. Many genetic syndromes may cause deviant cystic-like structures.

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