13+ Preauricular Sinus Anatomy Gif. Preauricular sinus is a common birth defect that may be seen during a routine exam of a newborn. Development of preauricular sinus due to incomplete or defective fusion of these hillocks.

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Or a cavity within a bone. A preauricular pit is a small hole in front of the ear, toward the face, that some people are born with. Preauricular sinus is related to hypertelorism, preauricular sinus, punctal pits, and deafness and external ear disease.

Performing a smooth and clean sinus surgery goes hand in hand with a perfect understanding of the nasal and paranasal anatomy.

Hakuba a, nishimura s, jang bj: Association of preauricular sinuses and renal anomalies. Preauricular sinus is a common birth defect that may be seen during a routine exam of a newborn. A preauricular sinus or cyst (also known as a congenital auricular fistula, congenital preauricular fistula, ear pit1:782, and preauricular cyst2 ) is a common congenital malformation characterized by a nodule, dent or.