Dermatologist Certificate Dermatological Procedures and Treatments

Question 1

What is the recommended surgical margin for a primary melanoma with Breslow thickness between 1.01–2.0 mm?

Accepted Answer

1–2 cm wide local excision

Answer

0.5 cm wide local excision

Answer

3 cm wide local excision

Answer

5 mm punch excision

Question 2

Mohs micrographic surgery is most appropriate for which type of skin cancer?

Accepted Answer

High-risk basal cell carcinoma on the face with poorly defined borders

Answer

Thin superficial spreading melanoma on the trunk

Answer

Dermatofibrosarcoma protuberans on the scalp

Answer

Sebaceous carcinoma on the eyelid

Question 3

Which phototherapy modality delivers narrowband ultraviolet B (NB-UVB) radiation at approximately 311–313 nm?

Accepted Answer

Narrowband UVB lamp

Answer

PUVA (psoralen + UVA)

Answer

Excimer laser

Answer

Broadband UVB

Question 4

What is the mechanism of action of cryotherapy in treating actinic keratoses?

Accepted Answer

Rapid freezing causes intracellular ice crystal formation and cell destruction

Answer

Chemical destruction of the stratum corneum

Answer

Selective thermolysis of pigmented cells

Answer

Thermal denatura­tion of keratin proteins

Question 5

Which laser type is considered the gold standard for treating port-wine stains?

Accepted Answer

Pulsed dye laser (585/595 nm)

Answer

Q-switched Nd:YAG laser

Answer

Fractional CO2 laser

Answer

Alexandrite laser

Question 6

What is the recommended first-line topical treatment for localized superficial basal cell carcinoma?

Accepted Answer

Imiquimod 5% cream

Answer

5-fluorouracil cream

Answer

Diclofenac gel

Answer

Tretinoin cream