| Irritation fibroma | |
|---|---|
| Other names | Oral fibroma, traumatic fibroma, focal fibrous hyperplasia |
 | |
| Histopathology of irritation fibroma. Low magnification (left) characteristically shows a nonencapsulated nodular mass. High magnification (right) shows fibrous connective tissue with collagen bundles, and some blood vessels and fibroblasts. | |
| Specialty | Gastroenterology |
| Symptoms | Palpable nodule |
An irritation fibroma is a fibrous nodule of the oral cavity, often considered to be a reactive hyperplasia secondary to trauma or other local sources of irritation.