Highest weightage subject — master this first!
FUPA-D for types: Follicular, Unicystic, Plexiform, Acanthomatous, Desmoplastic. Soap bubble = Ameloblastoma. Always posterior mandible.
Parakeratinized (NOT ortho). Satellite cysts = high recurrence. Gorlin syndrome = multiple OKCs.
Attached at CEJ. Most common developmental cyst. Can transform to ameloblastoma or SCC.
Most common odontogenic cyst overall. From epithelial rests of Malassez. Rushton bodies = hyaline bodies.
Most common odontogenic tumor = Odontoma. CEOT = Pindborg tumor = Liesegang rings = amyloid. Myxoma = honeycomb/tennis racket pattern.
Most common benign = Pleomorphic adenoma. Most common malignant = Mucoepidermoid carcinoma. Warthin = papillary cystadenoma lymphomatosum = bilateral.
Highest malignant potential = Erythroplakia. OSMF = areca nut. Leukoplakia = most common premalignant. Speckled leukoplakia = highest risk among leukoplakias.
Most common oral malignancy. Verrucous carcinoma = Ackerman tumor = broad pushing borders = good prognosis. TNM staging is HIGH YIELD.
Pemphigus = INTRAepithelial (fishnet IgG). Pemphigoid = SUBepithelial (linear IgG at BMZ). Tzanck cells = Pemphigus. Nikolsky sign = both.
Most common non-odontogenic cyst = Nasopalatine duct cyst. Botryoid = multilocular lateral periodontal. Gorlin cyst = Ghost cells.
CGCG vs Brown tumor of hyperparathyroidism = histologically IDENTICAL. Paget disease = Cotton wool skull, elevated alkaline phosphatase.
Oral hairy leukoplakia = EBV = pathognomonic for HIV. Hutchinson teeth = congenital syphilis. Pseudomembranous = most common candidiasis.
Dens in dente = most common in lateral incisor. Taurodontism = bull teeth. Gemination = 1 tooth tries to split. Fusion = 2 teeth join.
Hypercementosis = Paget disease link. Periapical granuloma (most common) > Periapical cyst > Periapical abscess.