MUCOCELE OF LOWER LIP-CASE REPORT AND ITS DIFFERENTIAL DIAGNOSIS

Abstract: The Mucocele or Mucus retention phenomenon is a salivary gland lesion of traumatic origin,   formed when the main duct of a minor salivary gland is torn with subsequent extravasation of the mucus into the fibrous connective tissue so that a cyst like cavity is produced. The wall of this cavity is formed by compressed bundles of collagen fibrils and it is filled with mucin. Mucoceles are usually associated with the minor salivary glands and hence are less likely to occur on the anterior hard palate and the attached gingiva, which do not typically possess minor salivary glands. This report describes a lesion of the lower lip that was definitively diagnosed by histologic examination as a mucocele or mucous retention phenomenon.