MD - Oral Pathology Developmental.pdf

Developmental Conditions Cleft Lip - Cleft Palate - Lip Pits - Invaginations at the commissures or near the midline of the lip Associated Syndrome: Van der Woude Syndrome: Clefts + Pits Fordyce Granules - Leukoedema - Lingual Thyroid - - Geographic Tongue (Migratory glossitis / Erythem...

Developmental Conditions Cleft Lip - Cleft Palate - Lip Pits - Invaginations at the commissures or near the midline of the lip Associated Syndrome: Van der Woude Syndrome: Clefts + Pits Fordyce Granules - Leukoedema - Lingual Thyroid - - Geographic Tongue (Migratory glossitis / Erythema migrans) Fissured Tongue Cherry Angioma Ectopic sebaceous glands Frequently found on buccal mucosa Completely benign White/Grey edematous lesion of the buccal mucosa Very common on buccal mucosa *When lip is stretched, the color goes away* Thyroglossal Duct Cyst Developmental 1/1000 Births Lack of fusion between the medial nasal process and maxillary process (which normally fuse to form the face) 1/2000 births Lack of fusion between the palatal sutures Frequently happens in conjunction with Cleft lip - Thyroid tissue mass at the midline base of the tongue This is where thyroid tissue originates during development, it normally migrates down to the neck/trachea area to form the thyroid gland Located along the embryonic path of thyroid descent Midline neck swelling Located along the embryonic path of thyroid descent Much like the lingual thyroid, only the tissue did not midrate all the way down White ringed lesion surrounding central red islands that migrates over time May be associated with certain foods Occassionally hurts/burns Tx: N/A Fold and furrows in the tongue dorsum Associated syndrome: Melkerson-Rosenthal syndrome: Fissured tongue + Granulomatous cheilitis + Facial paralysis “Mels Bells” -> Melkerson, Bells Palsy “Rosy Red” -> Rosenthal + Red swollen lips Angiomas Tumors of blood vessels or lymph vessels = “Red Mole” Extremely common Completely benign, small tumor of capillaries 2 Hemangioma Lymphangioma Dermoid Cyst Branchial Cyst Oral lymphoepithelial Cyst = Congenital focal proliferation of capillaries Most undergo involution as a child -> If it persists though usually get it surgically removed (mostly for esthetics) = Congenital focal proliferation of lymph vessels Orally its very rare -> Purple spots on the tongue On neck = Cystic hygroma Associated Syndrome: Sturge-Weber Syndrome = Angioma of leptomeninges (Arachnoid and Pia mater) + skin along the trigeminal nerve distribution Cysts Mass in the midline floor of the mouth (if above the mylohyoid) or upper neck ( if below mylohyoid) Contains adnexal structures (hair, sebaceous glands) Doughy consistency -> This is the main distinguishing feature vs a ranula Lateral neck swelling Epithelial cyst within a lymph node of the neck - Stafne Bone Defect (Lingual Bone Defect) Nasopalatine Duct Cyst Globulomaxillary Lesion Traumatic Bone Cyst (Simple Bone Cyst) Epithelial cyst within the lymph nodes of the oral mucosa Commonly Palatal or Lingual tonsils = Radiolucency in the posterior mandible inferior to the IAN canal Very severe lingual concavity = Heart-shaped radiolucency in the nasopalatine canal Caused by cystification of canal remnants Tx: Surgical Excision = Clinical term for any RL between the Max. Canine and Max. Lateral NOT a diagnosis, just a clinical description = Large RL that scallops around tooth roots No epithelial lining (so its like a pseudocyst) Mostly in the mandible of teens and is associated with jaw trauma Tx: Aspirate to diagnose (will usually have blood in them) and monitor 3