66. Melanocytic tumors

Question 1

66-1. Melanocytic skin lesions

name of melanocytic skin lesion

Answer 1

melanocytic nevi

Question 2

66-1. Melanocytic skin lesions

types of melanocytic nevi

Answer 2

junctional nevi : located at dermal-epidermal junction
compound nevi : growth to dermal layer
intradermal nevi : located in dermis

Question 3

66-1. Melanocytic skin lesions

morphology of melanocytic nevi

Answer 3

flat macule or raised papule

symmetric, sharp border, one type of color, < 6mm

Question 4

66-2. Pigment cell tumors of the skin

definition of melanoma

Answer 4

malignant proliferation of melanoma

Question 5

66-2. Pigment cell tumors of the skin

etiology of melanoma

Answer 5

UVB induced DNA damage

from dysplastic melanocytic nevi

Question 6

66-2. Pigment cell tumors of the skin

types of melanoma (4)

Answer 6

superficial spreading melanoma
lentigo maligna melanoma
nodular melanoma
acral lentiginous melanoma

Question 7

66-2. Pigment cell tumors of the skin

morphology of melanoma

Answer 7

Asymmetry
Border is irregular
Color is uneven
Diameter > 6mm
Evolution : color, size, shape, elevation change

Question 8

66-2. Pigment cell tumors of the skin

growth phase of melanoma

Answer 8

radial growth : low metastasis

vertical growth : high metastasis

Question 9

66-2. Pigment cell tumors of the skin

diagnostic criteria of melanoma

Answer 9

Breslow thickness