Cysts of soft tissues - salivary mucoceles Flashcards
2 types of salivary mucoceles?
mucous extravasation (90%)
mucous retention cysts (10%)
What are the salivary mucoceles related to?
minor salivary glands
contents of the salivary mucoceles?
cavity filled with saliva
salivary mucoceles common or uncommon?
common
Where are extravasation mucoceles located?
lower lip (70%)
followed by buccal mucosa and FOM
age rage for extravasation mucoceles?
wide age range, nostly under 30
colour of extravasation mucoceles?
bluish or translucent swelling
clinical presentation of extravasation mucoceles?
lower lip, buccal mucosa, FOM
wide age range, mostly under 30
bluish or translucent swelling
history or rupture, collapse and refilling
in mucoceles, what happens when you bite your lip n done of the salivary ducts is severed?
into surrounding tissue
foreign body
inflammation
have a localised area that has saliva - area of granulation tissue and saliva
why does the extravasation cyst appear at meal time?
production of saliva
so swelling the dissipate and disappear
pathogenies of extravasation cyst?
mucous extravasation from a ruptured duct
history of trauma
histopathology of extravasation cyst?
mucin filled cystic cavity
inflamed granulation tissue lining
no epithelial lining, but possible remnant of ruptured duct
chronic inflammation reaction
macrophages with phagocytosed mucin (foamy)
extravasation cyst epithelial lining?
no
has an inflamed granulation tissue lining
what cyst?
extravasation cysts
non epithelial lining - macrophages appear foamy
why do macrophages appear foamy in extravasation cyst?
phagocytosed mucin
What cysts is shown?
retention mucoceles
What is the retention mucocele?
retention of saliva within the duct
Does retention cyst have endothelial lining?
yes, the salivary duct itself
what age grup get retention mucoceles?
over 50
retention mucocles more common in upper or lower lip?
upper lip
pathogenesis of retention mucoceles?
cystic dilation of a duct
lined by epithelium
no inflammation
micro-sialoliths can form in the mucous
Is there inflammation of retention mucoceles?
no - maintained in duct
mucous not exposed to tissue surrounding it
micro-sialoliths associate with what mucoceles?
retention mucoceles
What are micro-sialoliths?
saliva has lots of electrolytes - stones forming inside retention mucoceles
What mucoceles is shown?
retention mucoceles
no inflammation and epithelial lining
