multiple telangiectases are present throughout the gastrointestinal tract. These may bleed insidiously, causing anemia. Figure 12-12 depicts the classic brown pigmentary changes on the lips of a patient with Peutz-Jeghers syndrome. This is an autosomal dominant disorder that is characterized by generalized gastrointestinal hamartomatous polyposis and mucocutaneous pigmentation.

A mucocele of the lip is a common bluish, cystic-appearing, painless, translucent, traumat-ically induced lesion. Mucoceles, which occur mostly on the lower lip, range in size from several millimeters to several centimeters and arise from obstruction or rupture of the minor salivary gland. When ruptured, a mucocele releases a clear, thick fluid. Figure 12-13 depicts a mucocele of the lower lip.

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