Skin

Question 1

Seborrheic keratosis

Answer 1

Common epidermal tumor
benign changes of the skin due to sun thickening the epidermis
round plaques are flat and coin like
marked hyper keratosis are not malignant or premalignant

Question 2

Actinic keratosis

Answer 2

• Also from sun damage
• varying degrees of pigmentation -rough surface -sandpapery
• turns into Squamous cell cancers
• are premalignant

Question 3

Squamous cell carcinoma

Answer 3

• Actinic turns into squamous cell carcinoma
• on sun exposed areas of the body
• anything that chronically stimulates the skin can promote these example ulcers burn scars etc.
• do metastasize to lymph nodes hyperkeratotic
• squamous cell cancers look like warts

Question 4

Basal cell carcinoma

Answer 4

Most common human skin cancer
On sun exposed areas of body
Grow up from basal layer of skin are not keratinized
form a dome
grow very slowly and hardly ever metastasize

Question 5

Melanocytic Nevus

Answer 5

Moles

benign congenital or acquired tumor of melanocytes

Question 6

Dysplastic Nevus

Answer 6

Occurs on sun exposed and non-sun exposed areas of the body
Asymmetrical borders color and diameter premalignant features
rarely associated with development to malignant Melanoma
if you have too many dysplastic nearby you could form a melanoma elsewhere
Can be inherited

Question 7

Malignant melanoma

Answer 7

• Malignancy of melanocytes
• advanced lesions capable of spread to lymph nodes and distant organs
• prognosis depends on the vertical spread of the lesion or the -depth of the lesion
• the worst form of skin cancer

Question 8

Verrucae

Answer 8

• Warts
• caused by HPV
• common in children and adolescents
• produces epidermal hyperplasia and koliocytosis (cell damage from viral damage). The growth is the reaction of the skin to the virus.