Melanocytic Lesions Pt 2 Flashcards
What are the highest risk sites for melanoma?
BANS
Back, arms, neck, scalp
What are the ABCDE’s clinical features of melanoma?
Asymmetry Border irregularity Color variegation Diameter greater than 6mm Evolving - enlarging/changing in color
How does melanoma grow?
Lateral and deep into the connective tissue
What are the four forms of melanoma lesions?
- Lentigo maligna melanoma
- Superficial spreading melanoma
- Nodular melanoma
- Acral lentiginous melanoma
What characterizes Lentigo maligna (Hutchinson’s freckle) as melanoma in-situ?
Melanoma in a purely radial growth phase
Large, flat, irregular borders, uneven color
*precursor to melanoma
How long does it typically take a lentigo maligna to begin vertical growth, turning into a lentigo maligna melanoma?
~15 years
What is the most common type of melanoma?
Superficial spreading melanoma (70%)
T/F: Melanomas will not have hair.
False
They can have hair
Which melanoma presents as rapidly entering the vertical growth phase?
Nodular melanoma
What does it mean if a nodular melanoma is amelanotic?
Melanocytes so poorly differentiated they are not producing melanin
T/F: Nodular melanomas are more deeply pigmented than other melanoma types.
True
_____________ are most commonly found in the oral cavity, on persons of color, and are more aggressive than cutaneous melanomas.
Acral lentiginous
Where are acral lentiginous melanomas most commonly found?
Palm of hand, sole of feet, subungual (under nails), mucous membranes (orally)
Who is most at risk for oral acral lentiginous melanoma?
Men in 5th-7th decade
What are the most common sites for oral acral lentiginous melanoma?
Hard palate/maxillary alveolar mucosa
