[Parotid cyst with branchiogenic part as remains of the first cleft and equivalent of a neck- ear-fistula (author's transl)].

Report on a rarity, consisting in the anatomic connexion of a parotid cyst with serous fluid and a congenital dysontogenesis near the ear. The latter will reduced to remains of the ectoderm of the first branchial cleft, remaining during the migration of the ear-"anlage" to the upper dorsal direction and interpreted as equivalent of a neck-ear-fistula. During embryogenesis apparently happens a collision between the remains of ectoderm and the ducts of the parotid-"anlage", developing from the buccal cavity. Clinical aspects, diagnosis, differential diagnosis and treatment were discussed. The management comprises exstirpation of the cyst after parotidectomy with preservation of the facial nerve.