An enlargement or protrusion of the mucous membrane of the lachrymal passages, or dropsy of the lachrymal sac, dependent upon catarrhal inflammation of the latter.

Dilation of a cavity with accumulated mucus secretion.

a sac or body cavity that is swollen because of the production of mucus by the cells in its lining

a chronic, cystic lesion of the sinuses which is lined by pseudostratified or columnar epithelium

a closed collection of mucus that typically expands over months to years

a collection of saliva produced by the minor salivary glands located deep in the lip

a common, cyst-like lesion of the oral cavity caused by the rupture of a salivary gland duct

a fluid filled mass which occurs within one of the paranasal sinuses

a smooth, soft, mucus-filled enlargement which may appear on the lower lip of a child

A retention cyst of the salivary gland, lacrimal sac, paranasal sinuses, appendix, or gallbladder. (Stedman, 26th ed)

1) a mucous-filled cyst-like mass; or 2) a cystic disease of the air cavities of the facial bones, causing the bone tissue to wear away

a swelling like a sac that is due to distension of a hollow organ or cavity with mucus.

A mucocele, also referred to as mucus extravasation phenomenon, is a swelling of connective tissue consisting of collected mucin from a ruptured salivary gland duct, which is usually caused by local trauma. The mucocele is a bluish translucent color, and is more commonly found in children and young adults.