Skin Cancer

Question 0

Three types of precursor legions for melanoma:

Answer 0

• Congenital nevi- present at birth
• Dysplastic nevi- become dysplastic after puberty
• lentigo maligna- looks like a freckle grows slowly and becomes mottled. Seen on side of face that has more sun exposure.

Question 1

Melanoma:

Answer 1

Arise from melanocytes in deepest epidermal layer

• develop where there is pigment or pre existing nevi.

Question 2

Radial growth phase

Answer 2

Grows parallel to the skin and can be excised.

Question 3

Vertical growth phase:

Answer 3

Atypical melanocytes rapidly penetrate into the dermis and subcutaneous tissue.

Question 4

Superficial spreading melanoma:

Answer 4

Flat scaly about 2cm

Arise from pre existing nevi changes to red white or blue.