SQUAMOUS PAPILLOMA.pathology bds practical pptx

Practical

1. PAPILLOMA

2. Squamous cell papilloma is a common benign epithelial tumour of the skin and mucosa . Sites: They can occur anywhere in the mouth. Tongue Lips Soft palate But any oral surface may be affected

3. Gross Appreance It is a soft, painless, usually pedunculated , exophytic nodule with numerous finger like projections that impart a “cauliflower” or wartlike appearance Projections may be pointed or blunted Lesions may be white, slightly red or normal in colour depending on amount of surface keratinization

4. An exophytic lesion of the soft palate with multiple short, white surface projections A pedunculated lingual mass with numerous long, pointed, and white surface projections . The smaller projections around the base of the lesion.

5. Microscopy i . The epidermis is thickened but orderly and is thrown into finger-like processes or papillae. ii. The central core of the papillae is composed of loose fibrovascular tissue.

6. Proliferation of keratinized stratified squamous epithelium arrayed in finger like projections with fibrovascular connective tissue cores Connective tissue cores may show inflammatory changes, depending on amount of trauma sustained by lesion Keratin layer is thickened in lesions with whiter clinical appearance and the epithelium typically shows normal maturation pattern