Oral Pathology-Developmental Conditions Flashcards
Cleft Lip
4-6 weeks in utero
No fusion b/w medial nasal process and maxillary process anteriorly
Usually offset, Unilteral
More common in Males
Tx: Surgically repaired at 3-5 months old
Cleft Palate
6-8 weeks in utero
No fusion b/w palatal shelves/Medial Nasal Process and Maxillay process posteriorly
Primary Palate: carries lateral incisor to lateral incisor. Why lateral incisors are missing
Complete CP: No fusion of Both Primary & Secondary palates
More common in Females
Surgical Repair: 6-12 months old
Lip Pits
Invagination at commissures or midline
Commisural Lip Pits: at corner of mouth
Paramedian Lip Pits: Bilateral midline lips
Van der Woude Syndrome
Most common genetic syndrome associated w/Cleft Lip & Palate
Cleft (Lip, palate, or both) + (Paramedial) Lip Pits
Fordyce Granules
Ectopic Sebacceous glands
Buccal Mucosa
Benign
Leukoedema
White/grey edematous (Fluid Filled) lesion
- on buccal mucossa (Very common)
Goes away when cheek is stretched
Lingual Thyroid
Thyroid TIssue mass at midline base of tongue
*This is where the thyroid tissue orignates during development
* it normally migrates down the neck/trachea to form thyroid gland
located along embryonic path of thyroid descent
Thyroglossal Duct Cyst
Midline Neck Swelling
located along embryonic path of thyroid descent
Similar to lingual thyroid, but did not migrate all the way down
Geographic Tongue
Aka Benign Migratory Glossitis, Erythema Migrans
White Ring surround central red islands
* migrate
May be associated w/certain foods
occasionally hurt & burn
Tx: None
Fissured Tongue
Folds & Furrows of dorsum tongue (Surface)
Melkerson-Rosenthal Syndrome
=Fissured Tongue + Granulomatous Cheilitis + Facial Paralysis
Think of it as MELS BELLS
* Bells Palsy=another type of facial paralysis w/facial nerve
Rosy Red
* red affecting lips-cheilitis
Angioma
Tumors composed of blood vessels or lymph vessels
Cherry Angioma
Red Mole
- very common
- Benign
- small tumor of capillarioes
Hemangioma
Congenital Focal Proliferation of capillaries
Most undergo involution as a child, but persistent lesions are excised
Lymphangioma
Congenital Focal Proliferation of Lymph Vessels
Oral Lymphangiomas:
* very rare
* purple spots on tongue
On neck=Cystic Hygroma
Dermoid Cyst
If Above Mylohyoid
* midline floor of mouth mass (Intraoral)
If Below mylohyoid:
* upper neck mass (extraoral)
Contains Adnexal Structures (hair, sebaceous glands)
Doughy Consistency: Main distinguishing feature vs a ranula
Branchial Cyst
Lateral neck swelling
Epithelial Cyst w/in lymph node of neck
Oral Lymphoepithelial Cyst
Epithelial cyst w/in Lymph nodes of oral mucosa
Common: Palatal or Lingual Tonsils
Stafne Bone Defect
posterior mandible Radiolucency
* below mandibular/IAN canal
Normal Anatomic Variation: Very severe lingual concavity
Nasopalatine Duct Cyst
Heart shaped radiolucency in nasopalatine canal
caused by cystification of canal remnants
Tx: Surgical Excision
Globulomaxillary Lesion
Clinical Term (not a Dx)
* any radiolucency b/w maxillary canine and maxillary lateral incisor
Traumatic Bone Cyst
Aka Simple Bone Cyst, Idiopathic Bone Cavity
Large radiolucency that scallops around tooth roots
No Epithelial lining (like a Pseudocyst)
Mostly in mandible of teenages
* associated w/jaw trauma
Tx: Aspirate to diagnose (Blood in it), Just monitor
