3D still showing<unk><unk> s. A<unk>  (plural<unk> e) is a<unk>  (i.e. an abnormal, epithelial-lined tract) involving a<unk><unk>  or duct.<unk> e are almost always related to the parotid<unk>  or duct, although the submandibular<unk>  is rarely the origin. The<unk>  can communicate with the mouth (usually causing no symptoms), the paranasal sinuses (giving rhinorrhea) or the facial skin (causing saliva to drain onto the skin). The usual cause is trauma, however<unk><unk>  can occur as a complication of surgery, or if the duct becomes obstructed with a calculus. Most parotid<unk> e heal by themselves within a few weeks.
Salivary gland fistula
Median mandibular cyst
Laryngeal cyst
Dental abscess
Laryngocele
Nasal septal abscess
Nasal septal hematoma
Retropharyngeal abscess