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[Persistence of the third branchial arch].

A Batuecas Caletrío1, P Blanco Pérez, S Santa Cruz Ruiz

  • 1Servicio de ORL y PCF, Hospital Universitario de Salamanca. abatuc@yahoo.es

Acta Otorrinolaringologica Espanola
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PubMed
Summary

Third branchial arch anomalies are rare, often presenting as cysts. This case highlights a rare presentation in a child, with thymic remnants found during diagnosis, prompting a literature review.

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Area of Science:

  • Anatomical abnormalities
  • Pediatric surgery
  • Head and neck pathology

Background:

  • Third branchial arch anomalies are rare congenital malformations, accounting for less than 1% of all branchial anomalies.
  • Clinical presentations vary, but cyst formation is the most common manifestation, often diagnosed later in life.

Observation:

  • A 7-year-old boy presented with a neck mass.
  • The mass was surgically removed and diagnosed as a branchial cyst.
  • Pathological examination revealed "thymic reminiscences" within the cyst.

Findings:

  • The presence of thymic remnants in a third branchial arch anomaly is an unusual finding.
  • This case underscores the diverse and sometimes unexpected pathological findings in branchial anomalies.

Implications:

  • Further investigation into the embryological origin and developmental pathways of third branchial arch anomalies may be warranted.
  • This case contributes to the limited literature on third branchial arch anomalies with thymic remnants, aiding in better understanding and diagnosis.