non-melanoma CA - SCC and variants Flashcards

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1
Q

who is affected by SCC

A
  • white skin
  • on sun exposed areas
  • higher mortality than BCC
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2
Q

what is SCC etiology

A
  • kertinocyte
  • UV exposure
  • or arsenic
  • immunocompromised
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3
Q

clinical manifestations of SCC

A
morpho
- papule, plaque or nodule
- pink red or skin colored
- scale
- exophytic
- indurated
friable
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4
Q

prog. of SCC

A
- mets rate is 5%
higher rates if
- large
- involves bone, muscle or nerve
- scalp, ears, nose, lip
- immunosuppressd
- caused by arsenic
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5
Q

what is bowen’s disease

A

pre-malignant

  • SCC in situ
  • does NOT invade dermis
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6
Q

what is actinic keratosis

A
  • from kertinocyte

- pre-malignant - 1/1000 go to SCC

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7
Q

etiolgy of AK

A
  • cumulative sun exposure

- risk are: age, skin color, immunosupression, genes

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8
Q

clinical manifestations of AK

A
  • on sun exposed areas
  • on backgroud of sun damages skin
  • feels like sandpaper
  • on lower lip is actinic cheilitis
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9
Q

Tx of AK

A
local
- liquid nitro
- curettage
- shave
field
- 5-fu
- imiquimod
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10
Q

what is keratocanthoma

A
  • craterform, erythematous nodule with central core
  • looks like volcano
  • rapid growth, but oft spontaneously involutes
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