system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
True regarding "Preauricular sinus" is:
assistant
The correct answer is  Failure of fusion of 1" and 2nd arch leads to the formation of preauricular sinus. It is commonly seen at the root of helix It is a blind track lined by squamous epithelium It may get repeatedly infected causing purulent discharge Abscess may also form Treatment is surgical excision of the track if the sinus gets repeatedly infected.