<unk>  is the inflammation or abscess of the embryonic cyst of pharyngeal bursa. It is located in the midline of the posterior wall of the nasopharynx. It is covered anteriorly by mucosa in the adenoid mass. It is bounded posteriorly by longus muscle.
Tornwaldt's disease
Darier's disease
Cruveilhier–Baumgarten disease
Chandler's disease
Milroy's disease
Lev's disease
Dieulafoy's lesion
Majocchi's disease