Irritation Fibroma

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Oral fibroma presents as a firm smooth lump in the mouth. It is usually the same colour as the rest of the mouth lining but is sometimes paler or, if it has bled, may look a dark colour. The surface may be ulcerated due to trauma, or become rough and scaly. It is usually dome-shaped but may be on a short stalk like a polyp (pedunculated). If it has developed under a denture it may be flat with a leaf-like shape.

The commonest location for an oral fibroma is on the inside of the cheek where the upper and lower teeth meet. Other common sites include the sides of the tongue, gums and inside the lower lip.

Apart from the feel and appearance, oral fibromas do not cause any symptoms. Oral fibromas develop over weeks or months to reach a maximum size usually about 1cm in diameter, but can sometimes be larger.