small epidermoid cysts on cheeks
milia
extremity with Hx of bug bite
dermatofibroma
seborrheic keratosis
acute onset
Leser-Trelat
multiple seborrheic keratosis: sign of cancer
seborrheic keratosis
seborrhiec keratosis
seborrheic keratosis: bubbly surface with keratin cysts
(may have been sampled as a malignant mole)
trunk
cherry angiomas
trunk
cherry angioma
keloid
keloid (could by hypertrophic scar)
keloid from ear piercing
keloid (probably been excised several times)
keloid
epidermal (epidermoid) cysts or pilar cysts
depends on punctum existence
epidermal (eperdermoid) cysts
basal cell carcinoma
basal cell carcinoma
squamous cell carcinoma
basal cell carcinoma
basal cell carcinoma, nodular type
basophilic nodules emanating from surface of the epidermis: makes Dx
noduleof basophilic, pleomorphic cells with hyperchromatic nuclei, peripheral palisade of tumor cells and CLEFTing from adjacent stroma
basal cell carcinoma
superficial basal cell carcinoma
nodular basal cell carcionoma
classic basal cell carcinoma (nodular)
well circumscribed nodule with pearly rolled border and central erosion
telangiectasis
telangiectasis
basal cell carcinoma
nodular basal cell carcinoma
basal cell carcinoma
superficial basal cell carcinoma
superficial basal cell carcinoma
superficial basal cell carcinoma
pigmented basal cell carcinoma
pigmented basal cell carcinoma
morpheaform basal cell carcinoma
basal cell carcinoma
basal cell carcinoma
basal cell carcinoma untreated
squamous cell carcinoma
normal skin
actinic keratosis
stratum corneum is thickened with retention of nuclei with loss of underlying granular cell layer
actinic keratosis
less than 1 cm in diameter, tan-brown or skin colored, rough sand paper consistency
not hard
thin non-indurated (not hard) lesions: clue that it is superficial
actinic keratoses
photodistributed lesions of actinic keratoses: pre-skin cancer
squamous cell carcinoma in situ: full thickness of atypia
islands of squamous epithelial cells extending into the dermis, KERATIN PEARLS
invasive squamous cell carcioma
progression of actinic keratoses to SCC in site to SCC across temple
squamous cell carcinoma
squamous cell carcinoma
squamous cell carcinoma
HPV-associated periungal squamous cell carcinoma
squamous cell carcinoma
squamous cell carcinoma in situ
invasive squamous cell carcinoma
keratoacanthoma
Marjolin’s ulcer
basal cell carcinoma
actinic keratoses
lots of shades of color and assymetric, irregular border, large diameter, elevated
melanoma
melanoma on toe
junctional, compound, intradermal melanocytic nevi
nevi
nevi
top: junctinal
bottom: intradermal
intradermal nevi
junctional nevi
halo nevi
giant congenital nevi
hairy
congenital nevi
multiple atypic nevi
irregular borders, variegated pigment and asymmetry
dysplastic nevus
fried-egg appearance
melanoma
Unorganized melanocytes, increased in number and located above the basal layer. However, none have ‘invaded’ into the dermis, and therefore the lesion remains an in situ lesion. It is in ‘radial’ growth phase.
melanoma
Melanoma invading the dermis: a “vertical” growth phase
arymmetric, notched, irregular border, color not unifrom, diameter > 6 mm, elevated
melanoma
Hx of color change
pigmented lesion, irregulat border, UGLY DUCKLING
melanoma
asymmetric, irregular border, elevated, diamter > 6mm
melanoma
plantar melanoma in situ
acral lentigious melanoma
plantar melanoma in situ
Acral lentiginous melanoma
subungal melanoma in situ
Acral lentiginous melanoma
melanoma in situ: slow radial growth
lentigo maligna
nodular melanoma in background of lentigo maligna
progression of insitu melanoma to invasive
nodular melanoma assoicated with lentigo maligna
nodular melanoma
superficial spreading melanoma
red, white and blue sign
superficial spreading melanoma
top: seborrheic keratosis
bottom: melanoma
seborrheic keratosis
seborrheic keratosis
seborrheic keratosis
left: melanoma in situ
right: seborrhiec keratosis
melanoma in situ
melanoma in situ
melanoma in situ
melanoma
melanoma
melanoma
melanoma
top: basal cell carcinoma
bottom: melanoma
melanoma
melanoma of iris
vulvar mucosal melanoma
metastatic melanoma
actinic keratoses
actinic keratoses
actinic keratoses
actinic keratoses
squamous cell carcinoma
squamous cell carcinoma
squamous cell carcinoma
Bowen’s disease
squamous cell carcinoma in situ
erythroplasia of queyrat: squamous cell carcinoma in situ on the penis
radiation induced
squamous cell carcinoma
tobacco use
leukoplakia with squamous cell carcinoma arising
lobular tumor with focal ulceration
squamous cell carcinoma