Pigmented Skin Lesions

Question 1

What is the definition of Naevi

Answer 1

Increased basal melanocytes with downgrowth at DEJ

Question 2

What is the difference between ephilides and lentigoes

Answer 2

Usually darker and alrger

Question 3

What are some differences between congenital and acquired naevi

Answer 3

Congenital are larger and slightly raised
They become more rugose and elevated as child grows older
Increased risk of melanoma in large naevi

Question 4

Where do nodular melanomas commonly appear

Answer 4

Any body site

Question 5

Describe the appearance f nodular melanoma

Answer 5

Blue-black or red skin coloured nodule which may be ulcerated or bleeding and has usually developed rapidly over preceding months

Question 6

Describe what Lentigo maligna melanoma is

Answer 6

Invasive melanoma developing within a lentigo maligna

Question 7

Who is most likely to develop Acral lentiginous melanoma and where on the patient would they appear?

Answer 7

Elderly patients - also Asian and African people

Usually affects the palms or soles or nails

Question 8

Describe amelanotic melanoma

Answer 8

Absent or minimal visible pigment

Question 9

Describe the appearance of Seborrheic keratoses

Answer 9

Brown/ black greasy lesions often on the trunk and usually mltiple.
They appear stuck on and warty but may be flat. They have a regular border

Question 10

What is the treatment for Seborrheic keratosis

Answer 10

Reassurance
Freeze
Curette
Shave

Question 11

What is a Talon noir

Answer 11

A subcorneal haematoma often caused by trauma