SM_254a: Benign Skin Neoplasms Flashcards Preview

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Flashcards in SM_254a: Benign Skin Neoplasms Deck (40)
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1

This is ____

This is seborrheic keratosis

2

Describe seborrheic keratosis

Seborrheic keratosis

  • Benign superficial (epidermal) growth
  • Common after age 30
  • Can arise on all body surfaces except palms and soles
  • Stuck-on quality (like a glob of wax smushed to the skin)
  • Tan or brown or sometimes black
  • Crumbles, flakes, or lifts off, revealing superficial waxy character if picked at
  • Often multiple
  • Individual lesions do not go away

3

Image on the left is normal, while imagine on the right is ____

Image on the left is normal, while imagine on the right is seborrheic keratosis

 

(hyperproliferation of keratinocytes)

4

This patient has ____

This patient has solar lentigo

5

Describe solar lentigo

Solar lentigo

  • Sun spot / age spot / liver spot
  • Results from sun damage: common on sun damaged skin
  • Flat light brown macules
  • Not cancerous or precancerous
  • No treatment required
  • Prevention is sun protection
  • Excessive amount reflects history of UV exposure: can identify people at risk for skin cancer

6

Solar lentigo involves increased ____ but not an increase in the number of ____

Solar lentigo involves increased melanin but not an increase in the number of melanocyte cells

7

____ spots that are ____, ____, and ____ are likely melanoma rather than solar lentigo

Ugly duckling spots that are different in color (darker, multiple, variegated), have a diameter of > 6 mm, and are evolving are likely melanoma rather than solar lentigo

8

These are ____

These are skin tags

9

Describe skin tags (acrochordons)

Skin tags (acrochordons)

  • Soft fleshy papules that arise in axiallae, neck, groin, and eyelids
  • Skin colored to brown
  • Often pedunculated (connected to skin with small stalk)

10

This is a _____

This is a skin tag

 

(polypoid growth protruding out of skin, soft and fleshy because composed of dermis in addition to epidermis)

11

This is a ____

This is a dermatofibroma

12

Describe dermatofibromas

Dermatofibromas

  • Single small round firm papule 0.5 - 1 cm
  • Pink, reddish brown, sometimes hyperpigmented
  • Dimple sign
  • Most common on lower extremities
  • Initiated by injuries to skin such as insect bites or inflammed hair follicles
  • Scar

13

___ sign is indicative of dermatofibroma

Dimple sign is indicative of dermatofibroma

14

This is a _____

This is a keloid

15

Describe keloids

Keloids

  • Firm, hyperpigmented, pink or red plaque or nodule
  • Often shiny or smooth surface
  • Usually at site of previously known tissue trauma (cut, laceration, burn, sometimes acne, piercing)
  • Excess scar tissue gone out of control
  • Lesions can be tender or itchy

16

In keloids, there is an imbalance in collagen ____ and ____ leading to ____ and ____

In keloids, there is an imbalance in collagen production and degradation leading to excessive collagen production and less degradation

 

(allows scar to form in all directions)

17

Keloids can be treated with ____ to flatten out the scar and reduce itch/pain

Keloids can be treated with intralesional steroid injection to flatten out the scar and reduce itch/pain

18

This is a ____

This is a cherry angioma

19

Describe cherry angiomas

Cherry angiomas

  • Shiny bright red papules
  • Location common on trunk but can be anywhere (face, scalp)
  • Likely genetic
  • Common to have multiple spots
  • Can increase in number during pregnancy

20

This is a ____

This is a cherry angioma

21

This is a ____

This is a pyogenic granuloma

22

Describe pyogenic granulomas

Pyogenic granulomas

  • Eruptive, small, solitary, sessile, or pedunculated vascular (red) raised papule
  • Bleeds easily with trauma
  • Relative quick onset

23

This is a ____

This is a pyogenic granuloma

24

This is an ____

This is an epidermal inclusion cyst

25

Describe epidermal inclusion cysts

Epidermal inclusion cysts

  • Mobile subcutaneous nodule, often with overlying punctum
  • Arise from hair follicles
  • Debirs (dead skin cells, oil, etc) collects within a sack: may discharge foul smelling cheesy white material
  • Benign and require no treatment
  • If rupture due to trauma, create abscess (sterile) -> incision and drainage
  • Can be surgically removed if cause discomfort

26

This is an ____

This is an epidermal inclusion cyst

 

 

(keratinocytic lining, filled with dead keratinocytes and sebaceous material)

27

This is a ____

This is a lipoma

28

Lipoma is a ____

Lipoma is a soft, poorly defined, rubber painless subcutaneous nodule

29

This is ____

This is sebaceous hyperplasia

30

Describe sebaceous hyperplasia

Sebaceous hyperplasia

  • Cream colored or yellowish papule with central depression
  • Located on face
  • Usually multiple in number
  • Age of onset is in 40s

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