The size of<unk> s vary from 1 mm to several centimeters and they usually are slightly transparent with a blue tinge. On palpation,<unk> s may appear fluctuant, but can also be firm. Their duration lasts from days to years, and may have recurrent swelling with occasional rupturing of its contents. Simplistic representation of the formation of<unk> s Locations Mucous retention cyst in maxillary sinus indicated by the asymmetrical blue lump to the right of the nose The most common location to find a<unk>  is the inner surface of the lower lip. It can also be found on the inner side of the cheek (known as the buccal mucosa), on the anterior ventral tongue, and the floor of the mouth. When found on the floor of the mouth, the<unk>  is referred to as a ranula. They are rarely found on the upper lip. As their name suggests, they are basically mucus-lined cysts and they can also occur in the paranasal sinuses, most commonly the frontal sinuses, the frontoethmoidal region, and the maxillary sinus. Sphenoid sinus involvement is extremely rare. When the lumen of the vermiform appendix of the intestine gets blocked due to any factor, a<unk>  can also form there. Variations A variant of a<unk>  is found on the palate, retromolar pad, and posterior buccal mucosa. Known as a "superficial<unk> ", this type presents as single or multiple vesicles and bursts into an ulcer. Despite healing after a few days, superficial<unk> s recur often in the same location. Other causes of bumps inside lips are aphthous ulcer, lipoma, benign tumors of salivary glands, submucous abscesses, and haemangiomas.
Oral mucocele
Laryngeal cyst
Median mandibular cyst
Salivary gland fistula
Nasolabial cyst
Enamel pearl
Gingival cyst
Preauricular sinus and cyst