Histopathology Flashcards
Histopathology of Radicular cyst?
Non keratinised stratified Squamous Epithelial lining, often incomplete
Fibrous and inflamed connective tissue capsule
Inflammation within the cyst
Hyperplasia of the epithelium
Histopathology of dentigerous cyst?
Thin, non-keratinised stratified squamous epithelium, or flattened cuboidal epithelium
Fibrous capsule with loose myxoid tissue resembling dental follicle
Histopathology of odontogenic keratocyst?
Thin and folded cyst capsule lined by stratified squamous epithelium
Parakeratosis
Well defined pallisading basal cells
Higher number of mitotic figures than other cysts
Resembles radicular cyst when inflamed
Satellite / daughter cysts
Histopathology of follicular ameloblastoma?
Cystic changes
Stellate reticulum-like tissue
Islands of odontogenic epithelium within a fibrous stroma
Pallisading Ameloblast-like cells
Histopathology of odontogenic myxoma?
loose myxoid fibrous tissue containing a few nests of odontogenic epithelium
randomly oriented oval, stellate, and spindle-shaped cells
No capsule
Histopathology of CEOT?
Fibrous stroma
Amyloid staining
- in concentric rings
Sharply defined cell borders
Histopathology of AOT?
Patchy calcification
Duct like spaces, lined with single row of columnar cells
Histopathology of Pyogenic granuloma?
Vascular proliferation
- lobules of endothelial cells
- Numerous thin walled, largely dilated vessels
Inflammation beneath patches of ulceration
Histopathology of giant cell epulis / PGCG?
multinucleate giant cells within the lesion
richly vascular and cellular stroma
Histopathology of plexiform ameloblastoma?
Anastomosing basal cells
Ameloblasts like cells
Stellate reticulum like tissue
Fibrous stroma
Histopathology of nasopalatine duct cyst?
Pseudostratified ciliated columnar epithelium - respiratory epithelium
- with mucous cells
Chronic inflammatory cell infiltrate within a cyst capsule
Histopathology of fibrous epulis?
Rich cellular fibroblastic tissue
Mature collagen fibres
Histopathology of complex odontome?
Well formed, enamel dentine and cementum
All disorderly deranged
