Skin cancers

Question 1

what margins needed for <1mm thick melanoma?

Answer 1

<1cm

Question 2

What margins are needed for 1-2mm thick melanoma?

Answer 2

1-2 cm

Question 3

What margins are needed for 2-4 mm thick melanoma?

Answer 3

2cm

Question 4

What margins are needed for >4mm thick melanoma?

Answer 4

2-3cm

Question 5

When should a SLNBx be done for melanoma?

Answer 5

>1mm without clinically positive nodes Lesions >0.75mm with high risk signs (ulceration)

Question 6

when should a LN dissection indicated for melanoma?

Answer 6

Clinically positive nodes

Question 7

Most common type of melanoma

Answer 7

Superficial spreading (radial growth)

Question 8

Basal cell carcinoma treatment

Answer 8

electrodissection and curettage for small lesions<2mm. Excision for larger lesions. If unable to undergo surgery, radiation, topical 5-FU, imiquimod, intralesional interferon

Question 9

Erythematous necrotic ulcers with purple erythematous borders

Answer 9

Pyoderma gangrenosum; treatment with steroid and cyclosporine

Question 10

Merkel cell carcinoma

Answer 10

neuroendocrine cancer of the skin. - has features in common with melanoma and small cell lung cancer. - excise with 2-3 cm margins and SLNBx rec. - sensitive to radiation and chemo used for SCLC but is not usually used