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B9 in the oral cavity - Coggle Diagram
B9 in the oral cavity
Reactive / Hyperplastic Lesions
Irritation (Traumatic) Fibroma
Irritation (Traumatic) Fibroma
Firm, smooth, pink nodule
Does not regress → excision required
Buccal mucosa, tongue, lip
Epulis Fissuratum
Pyogenic Granuloma
Soft, red, bleeds easily
Pregnancy tumor (↑ estrogen/progesterone)
Lobular capillary hemangioma (misnomer)
Peripheral Giant Cell Granuloma
Bluish-purple gingival mass
Derived from PDL/periosteum
Contains multinucleated giant cells
Peripheral Ossifying Fibroma
Gingiva (interdental papilla)
Often calcifications
Reactive, not odontogenic tumor
Benign Mesenchymal Neoplasms
Lipoma
Yellowish, soft, doughy
Buccal mucosa common
Rare intra-orally
Rhabdomyoma
Skeletal muscle
Tongue, floor of mouth
Rare but classic exam lesion
Leiomyoma
Smooth muscle origin
Tongue, lips
Often vascular subtype
Neurofibroma
Non-encapsulated
May indicate NF-1 if multiple
Schwannoma (Neurilemmoma)
Encapsulated
Antoni A/B areas (histology)
Tongue most common
Granular Cell Tumor
Site: Dorsal tongue
Exam trap: Pseudoepitheliomatous hyperplasia mimics SCC
granular cell layer
Traumatic Neuroma
Painful
History of surgery or trauma
Reactive, not neoplastic
Salivary Gland–Related Benign Lesions
Mucocele
Site: Lower lip (most common)
Clinical: Fluctuant, bluish swelling
Mechanism: Mucus extravasation
Age: Children & young adults
Pleomorphic Adenoma
Site: Hard palate (posterolateral)
Clinical: Firm, painless, slow-growing
Key exam warning: Risk of malignant transformation
⭐ Most common benign salivary tumor
Ranula
Site: Floor of mouth
Origin: Sublingual gland
Plunging ranula: Extends into neck (important exam point)
Canalicular Adenoma
Site: Upper lip
Demographic: Elderly females
Clinical: Small, slow-growing nodules
Benign Epithelial (HPV-Related) Lesions
Squamous Papilloma
HPV: 6, 11
Site: Soft palate, uvula, tongue
Clinical: Pedunculated, cauliflower-like
Verruca Vulgaris
HPV: 2, 4
Site: Labial mucosa, vermilion border
Less common intra-orally
Condyloma Acuminatum
HPV: 6, 11
Clinical: Broader base, often multiple
Important: Sexually transmitted
Focal Epithelial Hyperplasia (Heck Disease)
HPV: 13, 32
Population: Children, indigenous groups
Course: Often regresses spontaneously
Vascular & Lymphatic Lesions
Hemangioma
Blanches on pressure
Age: Childhood
May involute
Lymphangioma
Site: Tongue → macroglossia
Surface: Pebbly “frog-egg”
Does NOT regress
Varix / Venous Lake
Age: Elderly
Site: Ventral tongue, lower lip
Compressible, blue-purple