A young patient presents with a cyst anterolateral neck, just below the jaw. Which of the following is a possible diagnosis and its associated embryological defect?

A. Cervical/Pharyngeal Cyst: Pharyngeal Arch II failed to grow over Pharyngeal Arches III and IV
B. Cleft palate: Palate failed to fuse at the midline
C. DiGeorge Syndrome: Failure of neural crest cell migration
D. Edema secondary to poor lymphatic development in the neck
E. Treacher-Collins Syndrome: Malformations of the structures formed by Pharyngeal Arches I and II


Answer: A. Cervical/Pharyngeal Cyst: Pharyngeal Arch II failed to grow over Pharyngeal Arches III and IV

Biology & Microbiology

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