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Accessory auricle: Classification according to location, protrusion pattern and body shape.

Jungil Hwang1, Jaeyoung Cho2, Jin Sik Burm1

  • 1Department of Plastic Surgery, Kyung Hee University Medical Center, Kyung Hee University School of Medicine, Seoul, Korea.

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|October 5, 2018
PubMed
Summary

Accessory auricles (AAs) are common congenital anomalies. This study introduces a new classification system for AAs based on location and shape, aiding in diagnosis and treatment.

Keywords:
Accessory auricleAccessory tragusClassificationEar abnormalitiesEmbryology

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Area of Science:

  • Plastic Surgery
  • Congenital Anomalies
  • Medical Classification Systems

Background:

  • Accessory auricles (AAs) represent common congenital anomalies.
  • Existing classification systems for AAs may lack comprehensive detail.
  • A standardized approach is needed for consistent description and management.

Purpose of the Study:

  • To introduce a novel classification system for accessory auricles (AAs) based on anatomical location and morphological characteristics.
  • To propose a coding system for the new AA classification.
  • To provide a guideline for consistent diagnosis and documentation of AAs.

Main Methods:

  • Review of surgical records from 502 patients with accessory auricles (AAs).
  • Classification of AAs into anatomical types (intraauricular, preauricular, buccal) and subtypes based on location.
  • Further classification based on protrusion pattern (pedunculated, sessile, etc.) and body shape (spherical, ovoid, etc.).
  • Analysis of cartilage root presence and family history.

Main Results:

  • A total of 1,003 AAs were analyzed in 502 patients.
  • The superior pretragal subtype was the most frequent anatomical location (27.6%).
  • Pedunculated ovoid AAs were most common in preauricular and buccal areas, while sessile lobed AAs predominated in the intraauricular area.
  • A cartilage root was present in 78.4% of AAs, and 11% had a family history.

Conclusions:

  • The proposed classification system offers a detailed framework for categorizing accessory auricles.
  • This new system facilitates standardized coding and communication regarding AAs.
  • It serves as a valuable guideline for clinicians managing patients with these congenital anomalies.