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Fibroma is a benign neoplasm of the fibrous tissue that is a relatively uncommon lesion. They are clinically characterized by solid well-demarcated rounded, sessile or pedunculated growths covered by normal mucosa.
Local trauma can cause ulceration of these lesions. They are commonly seen on the buccal mucosa, but can also occur at any intra-oral site. These lesions are more common in adults, but can occur at any age. Malignant transformation is uncommon. Simple excision and removal of the cause of irritation is the preferred treatment.

Differential diagnosis:

Figure 1: Fibroma with surface ulceration. Note the swelling (yellow arrow) on the right lateral margin of the tongue with a linear ulcer (red arrow) due to chronic irritation of the sharp lingual cusps of the right mandibular second molar tooth, which has undergone severe attrition.
Figure 2: Fibroma. Note the 1.5x 1.5 cm sessile growth in the right commissure. Histopathological examination was suggestive of fibroma.
Figure 3: Fibroma. Note the 1.5x 1.5 cm sessile growth in the right buccal mucosa. Histopathological examination revealed fibroma.
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