1. The Branchial arches are embryologic structures that develop into anatomic structures in the adult human

2. The hibernoma is a rare neoplasm derived from vestigial remnants of brown fat left from early embryologic development.

3. A Branchial cyst is a cavity that is a congenital remnant from embryologic development. A Branchial cyst is also called Branchial cleft cyst

4. The anomalies result from Branchial apparatus (six arches; five clefts), which are the embryologic precursors of the ear and the muscles, blood vessels, bones, cartilage, and mucosal lining of the face, neck, and pharynx 1.