Final Exam Flashcards
____ is most common on lower lip
Mucocele (Extravasation type)
Differential diagnosis depends on depth of lesion
Blue if superficial
White if deep
Mucocele
Does NOT occur on the gingiva
Mucocele
____ only occurs on the floor of the mouth
Ranula
What is the etiology of the mucus extravasation phenomenon?
Trauma - results in the escaping of mucous into the surrounding connective tissue, resulting in an inflammatory reaction (Neutrophils and Macrophages)
What are 4 differential diagnoses for a Mucocele?
Fibroma
Benign mesenchymal tumor
Hemangioma
Hematoma
How do you tell the difference between a mucocele and a benign tumor?
Benign tumors do not fluctuate in size
What is the treatment for a Mucocele?
None
What is the etiology of a mucous retention cyst?
Obstruction of salivary flow due to a sialolith, impinging tumor, or periductal scar
Which is more common?
Mucous retention cyst
Mucous extravasation phenomenon
Mucous extravasation phenomenon
Where is the most likely location of a mucous retention cyst? (This location NEVER exhibits the extravasation phenomenon)
Upper lip
Why is there pain on eating due to a salivary duct cyst?
Because the saliva is stopped and cannot be excreted, causing pain
What are the two divisions of a mucocele?
Mucous extravasation
Mucous retention cyst
What is a “plunging ranula”
When mucin penetrates musculature and escapes into soft tissues in the neck
What cells contribute to the inflammatory response due to mucin extravasation of a mucocele?
Neutrophils and Macrophages
What is the treatment for a mucocele?
Surgical excision
or
Removal of associated minor salivary gland
What are two divisions of Maxillary sinus cysts?
Retention cysts - Blockage of antral sero-mucous gland
Pseudocysts - inflammation due to fluid accumulation within the sinus membrane
What is the epithelial difference between a Maxillary retention cyst and a Maxillary Psuedocyst?
Retention cyst – Lined by pseudostratified columnar epithelium with occasional mucous cells
Pseudocyst – NO evidence of epithelial lining
What are three differential diagnoses for Maxillary sinus cysts?
Polyps
Sinus lining hyperplasia
Neoplasms
What is the treatment for a Maxillary sinus cyst?
No treatment
Necrotizing Sialometaplasia is a ____ condition but appears ____
Benign; Malignant
Where is Necrotizing Sialometaplasia normally found?
The junction of the soft and hard palate
What is the initiating event of Necrotizing Sialometaplasia?
Ischemia
- Trauma
- Surgical manipulation
- Local anesthesia
What is the histological transformation that occurs in Necrotizing Sialometaplasia?
Salivary duct epithelium goes from Cuboidal –> Stratified Squamous
Histopathology of Necrotizing Sialometaplasia shows ____ necrosis of the salivary gland acinar units
Coagulation
Differential diagnoses for Necrotizing Sialometaplasia include:
SCC Salivary gland neoplasm Syphilitic gummas Deep fungal infections Subacute necrotizing sialadenitis
What is the treatment for Necrotizing Sialometaplasia?
Biopsy
Irrigation/Baking soda rinse
NSAID’s
Healing by secondary intention
Mumps is caused by the ____ virus
Paramyxovirus