morphology of the skin

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    Morphology and Differential

    Diagnosis

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    Welcome to Dermatology!

    No matter what area of medicine or surgery

    you pursue, you will get skin related

    questions from family, friends, and

    patients.

    The time frame is short, so make the best

    use of your time. arry your book with

    you at all times and try to make it throughall the photos.

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    uggestions for a uccessful

    "otation

    # $e on Time!

    # $e attenti%e and helpful.

    # Do not ask questions or make commentsduring the patient encounter. &lease ask

    all questions outside the e'am room.

    # &lease do not talk loudly in the hallway.

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    Macule

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    Macule

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    Macule

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    &atch

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    &apule

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    &apules

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    &apules

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    &apules

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    &laque

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    &laque

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    &laque

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    Nodule

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    Nodule

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    Nodule

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    Tumor 

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    Tumor 

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    Tumor 

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    &ustule

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    &ustule

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    (esicle

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    (esicle

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    (esicle

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    $ulla

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    $ulla

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    Wheals

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    Wheals

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    pecial kin )esions

    # $urrow* Thin linear papule or plaque

    # omedone* +ollicular papule filled with

    keratinous plug which is open or closed

    # yst* &apule or nodule filled with debris

    # Telangiectasia* Dilated blood %essel less

    than mm wide

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    $urrow

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    omedone

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    Telangiectasia

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    yst

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    econdary )esions

    # cale

    # rust

    # -rosions and ulcers

    # -'coriations

    # +issures

    # cars

    # )ichenification

    #  trophy

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    cales

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    cales

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    cales

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    rust

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    rust

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    -'coriations

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    -rosion

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    -rosion

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    /lcer 

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    /lcer 

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    /lcer 

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    +issure

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    +issure

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     trophy

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     trophy

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     trophy

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     trophy

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    car 

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    )ichenification

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    onfiguration

    #  nnular 

    #  rcuate

    # 0eographic

    # Discrete

    # onfluent

    # erpiginous

    # )inear 

    # "eticulated

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     nnular and arcuate

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    )inear 

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    -rythema ubitum

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    Descriptors

    # &unctate

    # )ichenoid

    # /mbilicated

    # carletiniform, morbiliform

    # )eonine

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    olor 

    # &ink

    # (iolet

    # 1range

    # $lue

    # 0reen

    # 2ellow

    # $lack

    # $rown

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    olor 

    # &ink3&ityriasis rosea

    # (iolet3)ichen planus

    # 1range34u%enile 'anthogranuloma

    # $lue3mioderone skin pigmentation

    # 0reen3&seudomonas

    # 2ellow35anthomas

    # $lack3eschar 

    # $rown3af6 au lait spots

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    olor 

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    Distribution

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    Morphologic categories

    # Macular7&atch

    # &apular 

    # &apulosquamous

    8scaly papules9# Nodular 

    # &ustular 

    # (esicular7bullous

    # /rticarial

    # &etechial

    # Telangiectatis

    # $urrow

    # &oikiloderma

    # :yperkeratotic;scale

    #  trophic

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    “More is missed by not looking

    than by not knowing” M. Mc

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    &rocedures

    # )iquid Nitrogen

    # -lectrodessication and curettage

    # $iopsy

     = &unch

     = ha%e

     = -'cision

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    eborrheic ncrease incidence with

    age

    # -asily treated with

    curettage or

    cryodestruction

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    Dermatosis &apulosa Nigra

    # Most likely a subtypeof seborrheic

    keratosis

    # Malar areas, mostcommonly on frican7

     merican women

    d 8ki T 9

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     crocordons 8kin Tags9

    # ommon, occurring inabout ?@A of adults

    # More common in obeseindi%iduals and oftende%elop in pregnancy

    # +rictional areas such asneck, a'illae,inframammary and groinlocations

    # an become irritated or

    infarcted because oftorsion

    D t fib

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    Dermatofibroma

    # +irm papule often withbrown pigmentation, mostfrequently seen on theanterior legs

    # BDimpleC sign# May be a reacti%e

    process to an insect bitereaction rather than atumor 

    # >f multiple, sometimesassociated with systemiclupus erythematosis

    D t fib

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    Dermatofibroma

    < l id

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    - id id t

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    -pidermoid yst

    T i hil l 8&il 9 t

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    Trichilemmal 8&ilar9 yst

    ti i < t i

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     ctinic

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    herry ngiomas

    # $enign %ascular proliferation

    # Bsenile hemangiomaC = donFt use this term

    with patients

    # /sually appear on trunk, start at age GE,

    increase with age

    # Dilated capillaries

    # T' for cosmetic reasons only

    http://162.129.70.33/images/cherryangioma_1_020330.jpg

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    http://162.129.70.33/images/cherryangioma_1_020330.jpg