Focal Fibrous Hyperplasia
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- 44% of cases.
- Dense collagenous tissue, with ulceration/superficial inflammation
- Dystrophic calcificaition within the fibrous connective tissue stroma (often highly cellular, with 'young stellate fibroblasts'
- No odontogenic epithelium seen.
- Occasional strands of surface epithelium growing down into the stroma.
- Most of these were previously diagnosed as fibromatous or ossifying epulides.
With thanks to Andrew Jefferies (Cambridge) and Alun Williams (RVC) for providing access to their lecture materials