10: Epithelial Pathology Flashcards
5 papillomas?
Squamous papilloma, Verruca vulgaris, Condyloma accuminatum, Verruciform Xanthoma, and Focal Epithelial hyperplasia
Benign proliferation of stratified squamous epithelium thought to be virally induced (HPV), but not as infective?
Squamous papilloma
Squamous papilloma character?
Soft painless usually pedunculated exophytic nodule with numerous fingerlike surface projections giving a cauliflower or wartlike look
Squamous papilloma treatment?
Surgery. May remain same if untreated
This is a benign, virus induced (HPV), focal hyperplasia of stratified squamous epithelium
Verruca Vulgaris (common wart)
Is verruca vulgaris contagious?
Yes, can spread by autoinoculation
Age Verruca vulgaris common in, and where is it rarely found
Children, mouth
Verruca Vulgaris treatment (4)? Which is used for oral warts?
Liquid nitrogen, Cryotherapy/Surgical laser (especially if oral), Salicylic or lactic acid (topical keratinolytic agents)
If untreated, how long will it take for Verruca Vulgaris to resolve?
2 years
Extreme accumulation of compact keratin resulting in hard surface projection several millimeters in height found in Verruca Vulgaris?
Cutaneous horn/Keratin horn
Virus induced (HPV) proliferation of stratified squamous epithelium of genitalia, perianal region, mouth, larynx?
Condyloma accuminatum (Venereal wart)
Condyloma acuminatum is considered what type of disease? When?
STD; several papillomas seen
Condyloma acuminatum age normally diagnosed?
Teenagers/young adults
Condyloma acuminatum occur orally where?
labial mucosa, soft palate, lingual frenum
Histologic indication of Condyloma acuminatum
Koilocytes: acanthotic stratified squamous epithelium w/ cover having pynknotic nuclei surrounded by clear zone
Which 2 HPV are associated with Cancer?
HPV 16, HPV 18. Present in urogenital condyloma acuminatum
Hyperplastic condition of epithelium of mouth, skin, and genitalia with a characteristic accumulation of lipid-laden histiocytes beneath the epithelium?
Verruciform Xanthoma
Is Verruciform Xanthoma an HPV papilloma?
No
Gender, Age, race for Verruciform Xanthoma?
White, females, 40-70 yo
What is the histology looking for when differentiating for a Verruciform Xanthoma?
Lipid laden histiocytes under the epithelium
What are two ways to differentiate verruciform xanthoma from other papillomas?
Faovr gingiva and alveolar mucosa (50%)
How do we tx Verruciform xanthoma?
Conservative surgical tx
HPV 13 and HPV 32 induced localized proliferation of oral squamous epithelium?
Focal Epithelial Hyperplasia
Age Focal Epithelial Hyperplasia found
Childhood
Clinical appearance of Focal Epithelial Hyperplasia?
multiple flat or rounded papules which are clustered with normal color (not white)
What is the hallmark histo for Focal Epithelial Hyperplasia?
acanthosis
What is acanthosis (Wiki def)?
thickening upper layer of epithelium: diffuse epidermal hyperplasia, increases thickness of stratum spinosum
Treatment for Focal Epithelial Hyperplasia? Prognosis?
Conservative surgical for diagnosis or esthetics, but will regress spontaneously; spontaneous regression reported months to years later
Common skin condition of elderly representing axquired benign proliferation of epidermal basal cells, associated with chronic sun exposure?
Seborrheic Keratosis
Clinical appearance of Seborrheic Keratosis?
Brown plaque that grows up and appears to be stuck on skin (popcorn kernel)
What is sebhorrheic keratosis identical to when it is a small macule (early stages)?
Actinic lentigenes
Form of Sebhorrheic keratosis in African Americans?
Dermatosis papulosa nigra
Where is sebhorrheic keratosis normally found on body (3) and when first seen?
Face, trunk, and extremities during 4th decade and become more prevalent with each passing decade
Sudden appearance of numerous seborrheic keratoses with pruritis that is associated with internal malignancy?
Laser-Trelat sign
Histo feature of Seborrheic Keratosis?
Deep keratin filled invaginations that look cystic = horn cyst/pseudo-horn cysts
Common small hyperpigmented macule of skin that represents a region of increased melanin production? Prediliction?
Ephelis (Freckle); blond and red-heads
How do you prevent new ephelises and darkening of old ones?
Sunscreen
Benign brown macule that results from chronic UV light damage to skin. Not seen in mouth, but common on face.
Actinic lentigo
Layman’s term for Actinic Lentigo?
Age spots/liver spots
Demographics for Actinic Lentigo? What age group is rare to see it in?
Older whites >70 (90%); before age of 40
Does Actinic Lentigo undergo malignant transformation?
No
Actinic lentigo tx?
Topical retinoic acid can reduce intensity and completely destroyed with Q-switched ruby laser
Diffuse hyperpigmentation of the facial skin in pregnant women?
Melasma
Flat brown mucosal discoloration produced by focal increase in melanin deposition and possibly concomitant increase in number of melanocytes?
Oral Melanotic Macule
Prevention of melanoma?
Minimize sun exposure or don’t get pregnant
Is the oral melanotic macule related to sun exposure?
No
Demographics for Melanotic macule
2:1 Females, can be on vermillion border
6 causes/syndromes/demographics associated w/ melanin pigmentation?
Racial, Peutz-Jehgers, Addison’s disease, Neurofibromatosis (cafe au late), Chronic trauma, Smoker’s Melanosis
What 4 drugs can cause melanin pigmentation?
Chloroquine/quinine derivatives, Phenolphthalein, Estrogen, and AIDS meds
Benign acquired pigmentation characterized by dendritic macrophages dispersed throughout epithelium?
Oral Melanoacanthoma
Oral Melanoacanthoma is found exclusively in what race, common site, and age? Tx?
Blacks w/ female predilection, Buccal mucosa, and 3rd-4th decade; biopsy to rule out melanoma and may resolve after biopsy
Freckle like lesions of the hands, perioral skin, oral mucosa, in conjunction with intestinal polyps?
Peutz-Jeghers syndrome
Benign, localized proliferation of cells from the neural crest called nevus cells. Represent the most commonly recognized nevus?
Acquired melanocytic nevus
Other name for Acquired Melanocytic Nevus?
Mole
Most common places to have an acquired
melanocytic nevus intraorally?
Palatal or gingivally