Question

What is the most common site for a lentiginous melanoma?

• A. Sole of foot
• B. Face
• C. Leg
• D. Trunk

Hint:

Acral lentiginous melanoma affects palms, soles, and nail beds; pick the most frequent of these.

Answer 1

The Correct Option is A

Step 1: Understanding the Question:
"Lentiginous melanoma" here refers to acral lentiginous melanoma, the subtype that grows on the palms, soles, and nail bed regions. We need its single most common site.

Step 2: Key Formula or Approach:
Recall where acral lentiginous melanoma most often develops among the acral sites (palm, sole, subungual).

Step 3: Detailed Explanation:
Acral lentiginous melanoma arises on the glabrous (hairless) skin of the palms and soles and in the nail bed. Among these acral sites, the sole of the foot is the single most frequently affected location, often on the heel or weight-bearing area, which is one reason it can be missed or mistaken for a callus or bruise until late.
Face is the classic site for lentigo maligna melanoma, a different subtype that arises from chronic sun damage, not for acral lentiginous melanoma.
Leg and trunk are common sites for superficial spreading melanoma (trunk in men, legs in women), not for the acral lentiginous subtype, which by definition is confined to palms, soles, and nail beds.

Step 4: Final Answer:
The sole of the foot is the most common site for acral lentiginous melanoma.
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