preauricular sinus

preauricular sinus

sinus tract or pit in preauricular skin, resulting from developmental defect of the first and second branchial arches.
Synonym(s): preauricular pit

pre·au·ric·u·lar si·nus

(prē'awr-ik'yū-lăr sī'nŭs)
Sinus tract or pit in preauricular skin, resulting from developmental defect of the first and second pharyngeal arches.
Synonym(s): preauricular pit.
References in periodicals archive ?
The patient was a 6-year-old girl who presented with bilaterally draining anterior neck puncta, a preauricular sinus, and moderately severe bilateral hearing loss.
Examination further revealed a preauricular sinus on the right (figure 3).
Surgery may be deferred or withheld in cases in which the anomaly is asymptomatic, as in the case of a nondraining and noninfected preauricular sinus.