perio exam 2: ging diseases 2 Flashcards
ging lesions of systemic origin
- lichen planus
- pemphigoid
- pemphigus vulgaris
- erythematus multiform
- lupus erythematosus
- drug induced mucocutaneous disorders
1.lichen planus oral involvement alone is common t/f
true
1.lichen planus-prevelance as a percent and is it rare in kids?
.1-4% yes, rare in kids
1.lichen planus-what’s the premalignant potential?
.5-2%
what are wick ham striae and which mucogingival disorder are they associated with?
characteristic skin lesions 1.lichen planus
but lichen planus has various clinical appearances
(papular, reticular, plaque-like, ulcerative, bullous)
t/f lichen planus is only in certain areas of the ging?
f-can be any area of the oral mucosa
papular
sm, infmm, congested spot on skin, a pimple
reticular
mesh; in the form of a network
atrophy
wasting, decrease in tissue size
ulcerative
affected with an ulcer, open sore or lesion of the skin or mucosa accompanied by sloughing of infmmed necrotic tissue
bulla
lg blister or skin vesicle filled w/fl
do you think pictures will be on the exam
i could see us needing to use vocal to describe stuff…
lichen vs. lichenoid lesions
“oid”=”like”
lichenoid lesions-ex’s
an uncertain background
lesions in contact w/dental restorations or associated w/ various meds (NSAIDS, diuretics, b-blockers) or systemic disease like liver diseases
lichenoid lesions:tx
biopsy but diff than normal
take sample to culture if considering candida
(~38% of OLP have secondary infection)
a tramuatic dental pq control
topical corticalsteroids to control pain, discomfort
pemphigoid
group of disorders in which antibodies toward components of basement membrane result in detachment of the epi form the ct
pemphigoid histology
autoantibody rxns vs hemidesmosome and lamina lucida components
complement mediated cell destructive process may be involved in the pathogenesis
pemphigoid-three types
bullous, benign mucous membrane(only oral), cicatricial (scar forming; more with eyes)
deposits of C3, IgG, and other Ig’s
what test can you use w/pemphigoid?
NICHOLSKY sign. rubbing of ging creates bulla formation
q-tip–>swipe, see if epi comes off and either redness or removal
what forms an intraepithelial bullae in the skin and mucous membranes?
pemphigus vulgaris
what has a strong medeterian and jewish genetic background?
pemphigus vulgaris
what has painful desquamative lesions, erosions, or ulcerations and is seen in a middle aged pop, and chronic courses have recurrent bulla formation?
pemphigus vulgaris
what is associated with acantholysis? and define that term.
acantholysis is the histology of pemphigus vulgarism and is due to the destruction of desmosomes. it is pericellular epithelial deposits of IgG and C3.
besides acantholysis, what is another histology of pemphigus vulgarism
circulating autoantibodies against interepi adhesion molecs
can pemphigus vulgarism have major gi/systemic effects?
my notes say yes
what’s an acute, sometimes recurrent vesiculobullous disease affecting both mucous and skin?
erythema multiform.
bulla rupture and leave extensive scars.
oral involvement of erythema multiform: % of cases seen?
25-60%
what will the lips look like of a pt w/erythema multiform?
swollen with extensive crust alone v. border
what are characteristics of erythema multiform skin lesions?
iris appearance and bullae
and w/extensive necrosis: Steven johnson syndrome (oral, ocular, genital, skin)
erythema multiform is almost only in the elderly t/f
false, any age but mostly in younger pop
erythema multiform-what kind of immune reaction?
cytotoxic immune rxn toward keratinocytes mediated by a wide range of factors including herpes and various drugs
erythema multiform-histopathology is a key in diagnosis?
no! it’s non specific
erythema multiform-tx
pq control, local and systemic corticosteroids
lupus erythematosus: what disorder?
autoimmune ct disorder in which autoantibodies form to various cellular constituients
_____ has central atrophic area with sm white dots surrounded by irradiating fine white striae with a periphery of telangiectasia? (vascular lesion from dilation of a group of sm bv’s)
lesions can be ulcerated
lupus erythematosus
can lesions of lupus erythematosus be differentiated from leukoplakia or atrophic oral lichen plans?
no. (and it pry means w/out histology it can’t be)
telangiectasia
associate with lupus erythematosus (she said it means if you pouch on it the tissue blanches)
wiki “or angioectasias (also known as spider veins) are small dilated blood vessels[1] near the surface of the skin or mucous membranes, measuring between 0.5 and 1 millimeter in diameter.[2]”
lupus erythematosus had what characteristically shaped skin lesion?
butterfly shaped! (skin around nose and face changes)
lupus erythematosus: histology
degen of basal cells and inc WIDTH* of the basement membrane
deposits of various Ig’s, C3 and fibrin along the basement membrane
(um, no offense but it doesn’t help that she bolded the word “width” when they already destroyed all meaning of the word last unit. but maybe width as height only makes sense in the case)
atrophic ging discoid lupus erythematosus
degen of what
deposits of what
systemic forms can be what?
degen of basement cells and increased width of the basement membrane deposits of various Ig's, C3 and fibrin along the basement membrane discoid forms (mild chronic which affects skin and mucous membranes)
systemic forms can be FATAL!