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56 Cards in this Set

  • Front
  • Back
what is Hyperkeratosis
thickened keratin layer of the surface epithelium. like a calus
Hyperorthokeratosis
epithelium has a granular layer and the nuclei are lost in the keratin layer
Hyperparakeratosis
there is no granular cell layer and the epithelial nuclei are retained in the keratin layer
(remnant exists on outer)
Spongiosis
intercellular edema of the spinous cell layer
Acanthosis
thickened spinous layer. DON’T GET CONFUSED WITH ACANTHOLYASIS
Epithelial dysplasia
changes in size, shape and
organization of adult cells. begins in the basilar portions of the epithelium.
Verrucous hyperplasia
a type of papillary, exophytic proliferation of squamous epithelium “FINGERLIKE”
Oral areas that are keratinized
1) Hard palate
2) Gingiva
3) Alveolar mucosa
4) Dorsal tongue
Oral areas that are non-keratinized
1) Buccal mucosa
2) Buccal vestibule
3) Labial mucosa
4) Labial vestibule
5) Floor of mouth
6) Lateral tongue
7) Soft palate
8) Gingival sulcus
is it oral keratinized or non keratinized that are more vulnerable to malig
non-keratinized
clincial features of Leukoedema? who gets it more?
-common, painless and persistent.
considered a normal variation (not a neoplasm)
-it appears to be more prominent in blacks (70-90%) and dark-skinned
-bilateral
-buccal mucosa shows a diffuse filmy milky opalescence
-mucosa may appear somewhat folded, or wrinkled
*white appearance disappears when tissue is stretched
-may also involve floor of mouth
etiology of leukoedema
not know. but seen more in smokers
histology of leukoedema
acanthosis, parakeratosis and intracellular edema
tx for leukoedema
none since non malig. but should look to make sure it is not leukoplakia
Differential diagnosis for leukoedema
keratosis
white sponge nevus
smokeless tobacco lesions
cheek-biting lesions
clinical features for Linea Alba
white line along buccal mucosa in region of occlusal plane
Histology for linea alba
hyperorthokeratosis, intracellular edema
etiology for linea alba
may be due to biting buccal mucosa or negative pressure due to habits such as sucking cheeks
clinical features for Squamous Papilloma: what is it? what does it look like? where does it usually reside? who is more at risk? what color is it?
-exophytic (ABOVE SURFACE), “cauliflower-like” soft lesion, WHITE
-usually a few mm in diameter (0.5 cm) but up to 1.5 cm
-pedunculated or less commonly sessile
-usually found on tongue, lips, buccal mucosa, gingiva and palate (palate and uvula account for 1/3 of lesions)
-seen at any age (usually adults)
-may be white or pink (depends on amount of hyperkeratosis)
what is the most common oral lesion
squamous papilloma
Etiology of squamous papilloma
Human Papilloma Virus(HPV)- especially subtypes 6 & 11
(low virulence and infective rate)
(3 to 12 month incubation period)
- transmitted by person to person contact, etc.
Histology of squamous papilloma
-long thin finger-like projection of squamous epithelium
containing a thin connective tissue core
-may show hyperkeratosis
Treatment for squamous papilloma
1) excisional biopsy (including base of lesion)
2) recurrence and dissemination to other parts of body rare
3) malignant transformation rare
4) vaccine targeted for HPV types 6, 11, 16 and 18
Differential diagnosis for squamous papilloma
1) verruca vulgaris
2) verrucous carcinoma
3) condyloma acuminatum
4) verruciform xanthoma
5) etc.
Clinical features of Verrucous Vulgaris
1) common, painless and persistent
2) wart-like with sessile base
3) has finger-like projection
4) may be white or normal in color
5) some may show a keratin horn
who is prone to Verrucous Vulgaris? where is it usually?
-children and young adults
-oral lesions often seem on vermillion border, labial mucosa
and anterior tongue
-may spread to other parts of body, especially fingers (contagious)
-commonly found on hands and fingers of children
Etiology Verrucous Vulgaris
human papilloma virus, HPV-2, HPV-4, HPV-6 and HPV-40
Histology Verrucous Vulgaris
1) pointed projections from surface epithelium (FINGER LIKE PROJECTIONS. NOT PEDUNCULATED)
2) thickened keratin
3) viral inclusion may be seen in upper spinous layer
4) inflammation in connective tissue
5) MULTIPLE NOT JUST BY ITSELF
Treatment of Verrucous Vulgaris
excisional biopsy, laser, cryo therapy
-some disappear spontaneously (⅔ within 2 years)
Differential Diagnosis for verrucous vulgaris
same as squamous papilloma
Condyloma Acuminatum also know as Venereal Wart. what is the etiology
- Human papilloma virus group HPV-2, (HPV-6, HPV-11, HPV-16, HPV-18, HPV-53, HPV-54 and HPV 31)
- incubation period 1 to 3 months after sexual contact
verrucous vulgaris is what kind of wart
Common Wart
how do ppl get Condyloma Acuminatum
sexually transmissible and autoinoculable viral disease (STD)
tx for condyloma acumintam
Excisional biopsy
what does Condyloma Acuminatum look like?
-soft papillary nodules that proliferate rapidly in size
-white or pink
-up to 2 cm in diameter (larger than squamous papillomas)
where can you usually see Condyloma Acuminatum.
-anogenital skin (can occur in mouth)
-multiple, papillary masses involving tongue,buccal mucosa, palate, gingiva
For Condyloma Acuminatum, in anogenital areas, those infected with HPV 16 and HPV 18 are associated with an increase in what?
squamous carcinoma
WHAT IS A KOILOCYTE?
???
who gets Focal Epithelial Hyperplasia (Heck's disease)
-children (ages 3 to 18) and middle-aged adults
-1st observed on American Indians, but also ethnic groups
affected
what does focal epithelial hyperplasia look like?
-flattened multiple nodular lesions usually on lower
lip, but also seen on buccal mucosa, commissures, upper lip and tongue
-lesions usually 1 to 5 mm in diameter
-same color as adjacent mucosa
Heck's disease is common in what age?
children
etiology of Focal Epithelial Hyperplasia
may be of viral origin (human papillomavirus types 13 and 32)
Histology of Heck's disease
-acanthosis
-mitosoid cells are sometimes seen in squamous epithelium
tx for focal epithelial hyperplasia
none unless want to move it for aesthetic reasons
Differential Diagnosis for heck's disease
Squamous papilloma OR MULTI FIBROMA
Verruciform Xanthoma looks like what?
1) characterized by lipid-laden histiocytes beneath epithelium
2) uncommon, painless and persistent
3) usually solitary lesion up to 1.5 cm in diameter
4) sessile or pedunculated base
5) normal or reddish in color or may be hyperkeratotic
6) rough or pebbly surface
who gets Verruciform Xanthoma
patients over 40 years of age (1:2, M/F ratio) MORE FEMALE
where do you see Verruciform Xanthoma
lower alveolar ridge, palate, floor of mouth, lip, genitalia, etc.
etiology Verruciform Xanthoma
unknown (probably not HPV) may be an unusual response to injury
Histology Verruciform Xanthoma
1) verrucous hyperparakeratotic surface with elongated rete ridges
2) large swollen "foam" cells (histiocytes and xanthoma cells) in connective tissue papillae between epithelial pegs
Treatment for Verruciform Xanthoma
1) excisional biopsy
2) usually no recurrence
3) no malignant tranformation
Differential Diagnosis for Verruciform Xanthoma
1) Squamous papilloma
2) Condyloma acuminatum
3) Early carcinoma
summary Verruciform Xanthoma
-SOLITARY LESION,
-NOT COMMON,
-RED PEBBLE LIKE SURFACE,
-FOUND ON SKIN OR GENITALIA, -HAS FOAM CELLS (XANTHOMA CELLS-MACROPHAGES)
summary for Focal Epithelial Hyperplasia (Heck's disease)
-VIRAL ORIGIN,
-YOUNG PPL,
-MULTI LESIONS SEEN, -CONSIDERABLE ACANTHOSIS
summary for Condyloma Acuminatum
-20% OF ALL STDS DX,
-CAN AUTOINOCULATE TO OTHER PARTS OF THE BODY
-THEY TEND TO BE LARGER THAN PAPILLOMA, -CONDYLOMATAS INFECTED WITH HPV 16 AND 18 HAVE AN INCREASED RISK OF MALIG TRANSFORMATION
-VERY CONTAGIOUS
summary for Verrucous Vulgaris
-CAN SPREAD TO OTHER PARTS, -HPV CAUSED,
-HAS KERATIN HORN AND FINGERLIKE PROJECTIONS