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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 mucocele 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 .
Minor trauma to the floor of the mouth is thought to damage the delicate ducts that drain saliva from the sublingual gland into the oral cavity. [2] The lesion is a mucous extravasation cyst (mucocele) of the floor of mouth, although a ranula is often larger than other mucoceles (mainly because the overlying mucosa is thicker). [3]
Oral mucocele is the most common benign lesion of the salivary glands generally conceded to be of traumatic origin. It is characterized by the pooling of mucus in a cavity due to the rupture of salivary ducts or acini. It can occur in the lower lip, palate, cheeks, tongue and the floor of the mouth.
For example, mucous cyst of the oral mucosa and nasolabial duct cyst are not of odontogenic origin. In addition, there are several conditions with so-called ( radiographic ) ' pseudocystic appearance' in jaws; ranging from anatomic variants such as Stafne static bone cyst , to the aggressive aneurysmal bone cyst .
To prevent AC from developing, protective measures could be undertaken such as avoiding mid-day sun, [2] or use of a broad-brimmed hat, [2] lip balm with anti UVA and UVB ingredients (e.g. para-aminobenzoic acid), [7] or sun blocking agents (e.g. zinc oxide, titanium oxide) [7] prior to sun exposure.
Oral mucocele a mucous cyst. Oral mucoceles are common, and are caused by rupture of a salivary gland duct and spillage of mucin into the surrounding tissues. Usually, they are caused by trauma. Classically, a mucocele is bluish and fluctuant, and most commonly occurs on the lower lip. [11] Ranula is a mucocele under the tongue.
The skin of the face is thicker than the skin overlying the lips where blood vessels are closer to the surface. As a consequence, the margin of the lips shows a transition between the thicker and thinner skin, represented by the vermilion border. It therefore has the appearance of a sharp line between the coloured edge of the lip and adjoining ...
Mucous-membrane pemphigoid: Autoimmune disease which affects only mucous membranes with clinical presentation of hard and rigid blisters which then rupture eventually into deep ulcers. [18] [26] Cutaneous lupus erythematosus: These present as oral discoid lesions which may be present on the inner cheek and behind the lips. White papules may ...