Fourth branchial cleft cyst

Case contributed by Wen Jak Ma
Diagnosis almost certain

Presentation

Left neck lump with fluctuating size

Patient Data

Age: 25 years
Gender: Female
  • Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.
ultrasound

Complex cystic mass immediately lateral to left hemithyroid.

ct

Cyst lateral to left hemithyroid, deep to sternocleidomastoid, displaces IJV anteriorly, CCA posteriorly.

Case Discussion

This cyst was aspirated. Cytology shows benign squamous cells, neutrophil polymoprhs, amorphous acellular debris. These findings support diagnosis of a branchial cleft cyst, with the position typical of a very rare fourth branchial cleft cyst.

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