4.23 path derm 2 Flashcards
(34 cards)
Macules and papilla of hypopigmentation
Vitiligo
Autoimmune destruction of melanocytes
Vitiligo
Absent melanocytes
Vitiligo
Melanocytes present but don’t produce enough melanin
Albinism
Tyrosinase defect
Albinism
Abnormal melanocyte migration
Albinism
Associated with pregnancy and oral contraceptives
Melasma
Labial melanocytic macule associated with
Peutz-jeghers disease
Peutz-jeghers disease is associated with
Labial melanocytic macule
Melanocytic hyperplasia
Lentigo
3 types of melanocytic nevi
Junctional
Compound
Intradermal
Red pink nodule
Spitz nevus / spindle and epithelioid cell nevus
Blue to black macule
Blue nevus
White rim around nevus
Halo nevus
Halo nevus adolescent vs old
Adolescent benign
>40 could be melanoma
Nevi molecules
Mutations in BRAF or RAS
Dysplasic nevi don’t make p16 or CDK4/6
Melanoma molecules
Mutations in RAS BRAF and MEK
Med for melanoma and what it inhibits
Vemurafenib
BRAF
ABCDE of melanoma
Asymmetry Border Color Diameter (>6mm) Evolution
Depth of invasion is also called
Breslow depth
Most important prognostic feature of melanoma
Depth of invasion / brea low depth
How to measure depth of invasion
Granular cell layer to base of tumor
Level (not depth) of invasion
Clark level
Upward pagetoid spread of atypical melanocytes
Melanoma in situ