MUCOCELE (MUCUS EXTRAVASATION

PHENOMENON) Rupture of a salivary gland duct and spillage of mucin into the surrounding soft tissues result s of local trauma. Unlike the salivary duct cyst it lacks an epithelial lining. Although sometimes salivary duct cysts is reported under the classification of retention mucocele. CLINICAL FEATURES:

Mucoceles typically appear as dome-shaped mucosal swellings that can range from 1 or 2 mm to several centimeters in size. often imparts a bluish translucent hue to the swelling, although deeper mucoceles may be normal in color. Characteristically it is fluctuant. Age: children and young adults. perhaps because younger people are more likely to experience trauma that induces mucin spillage. Location: The lower lip is by far the most common site for the mucocele. - Less common sites include the floor of mouth (ranulas:5.8%) - not a single example was identified from the upper lip. This is in contrast to salivary gland tumors, which are not unusual in the upper lip but are distinctly uncommon in the lower lip. HISTOPATHOLOGIC FEATURES: spilled mucin surrounded by a granulation tissue response. TREATMENT AND PROGNOSIS: Some mucoceles are short-lived lesions that rupture and heal by themselves. Many lesions, however, are chronic in nature, and local surgical excision is necessary.

Reference:

Oral and maxillofacial Pathology by

Neville, 3ed edition

A 13 years old female child visited the dental clinic with the chief complain of Swelling in the lower lip (Fig 1). The history of present illness consisted of Swelling in the lower lip since 2 days in the inner aspect of lower lip in the 34, 35 region. It had been increasing since 2 days. It was painless and no history of fever or malaise was present. It was Soft, fluctuant and palpable with no increase in temperature, oval in shape.

Reference:

http://johcd.org/pdf/4.pdf

Case 1