Skin Neoplasia (clinical) - Johnson

Question 1

skin cancer statistics

Answer 1

Basal Cell Carcinoma – 79%
Squamous Cell Carcinoma – 15%
Melanoma – 5%
Other Forms of Skin Cancer – 1%

1 melanocyte to every 10 basal cells

Question 2

basal cell carcinoma**

Answer 2

• the most common skin cancer

- cells rapidly dividing

Question 3

actinic keratosis**

Answer 3

• most common precancer**
• Skin cells proliferating rapidly –> mild hyperkeratotic (not as much as psoriasis)
• develop into squamous cell carcinoma if left untreated**
• treat: cream and freezing

Question 4

basal cell carcinoma**

Answer 4

• where?: nose (common), sun exposed areas

- usually do NOT spread to other tissue**

Question 5

squamous cell carcinoma**

Answer 5

• top layer of epidermal cells –> usually more keratotic
• in situ SCC that hasn’t spread into dermis –> Bone’s disease**
• HPV can be predisposing factor
• can spread to other tissues and kill you, unlike BCC**
• Margillans tumor (type of aggressive squamous cell carcinoma)

Question 6

treatment for BCC or SCC**

Answer 6

-Mohs surgery** (highest cure rate of all treatment); wound repaired after removal 
Mohs Surgery- 95-99%
Surgical Excision - 90%
Curettage - 85-90%
Radiation - 85%
Creams - 50-85%

Question 7

tanning bed

Answer 7

• lowers your immune system

- causes mutation in skin that leads to skin cancer