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| Mucocele of the lower lips (Source : http://img.medscape.com/pi/emed/ckb/dermatology/1048885-1075226-1076717-1076807.jpg) |
"Mucocele" is the clinical term used to describe the mucus extravasation phenomenon, as well as the mucus retention cyst. The mucus extravasation phenomenon is due to trauma of the minor salivary gland exxcretory duct, resulting in retention of saliva in the surrounding tissues, and is essentially classified as
a false cyst, since it lacks an epithelial lining. This lesion mainly occurs at the mucosa of the lower lip, due to frequent biting, and may be superficial or deep in the tissues. The mucus retention cyst differs from the mucus extravasation phenomenon in that itis the result of obstruction of salivary flow, as well as being surrounded by granulation tissue.
Clinically, the lesion is painless and presents as a smooth round or oval swelling that fluctuates. Its color is normal or slightly bluish, and its size ranges from a few milimeters up to 2 cm.
Treatment is surgical and entails excision of the lesion.
Surgical Technique
After local anasthesia, an alliptical incision is made on the mucosa araound the cyst, in order to facilitate dissection of the lesion. The superior wall of the cyst is grasped with a hemostat together with the overlying mucosa and is separated from the surrounding tissues using scissors. During dissection care must be taken, because the cyst may easily rupture and shrivel, which will make removal difficult. In such a case, preparation may be facilitated if gauze is placed inside the erupted cystic cavity, so that the cavity is again expanded and restored to its previous condition. After removal of the lesion, the mucosa of the wound margins are undermined and superficially sutured (only at the mucosa, Avoiding injury to the underlying salivary glands.References : Fragiskos, FD. 2007. Oral Surgery. Springer. Germany
Video : http://www.youtube.com/watch?v=dHIryuUnxcQ
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