Which skin condition often resembles warts and may appear as open sores with a crusted surface on an elevated base?

Which skin condition often resembles warts and may appear as open sores with a crusted surface on an elevated base?

• A. Malignant melanoma
• B. Basal cell carcinoma
• C. Squamous cell carcinoma
• D. Mildest cell carcinoma

Answer: (C)

This item is testing recognition of how squamous cell carcinoma typically presents on the skin. Squamous cell carcinoma often appears as a wart-like lesion that may open and crust over, sitting on an elevated or indurated base. The surface can be scaly or crusted, and the lesion may bleed or fail to heal, reflecting its origin from epidermal keratinocytes and its potential to invade surrounding tissue. This description—warty, crusted, and ulcerated on an elevated base—is a classic pattern for squamous cell carcinoma. Basal cell carcinoma, by contrast, more commonly shows a pearly, translucent or skin-colored bump with fine blood vessels and gradual growth, and although it can ulcerate, its typical surface and progression are different. Malignant melanoma usually features changes in color and irregular borders or asymmetry rather than a crusted, wart-like surface on an elevated base. The nonstandard option doesn’t correspond to a recognized skin-cancer diagnosis.

This item is testing recognition of how squamous cell carcinoma typically presents on the skin. Squamous cell carcinoma often appears as a wart-like lesion that may open and crust over, sitting on an elevated or indurated base. The surface can be scaly or crusted, and the lesion may bleed or fail to heal, reflecting its origin from epidermal keratinocytes and its potential to invade surrounding tissue. This description—warty, crusted, and ulcerated on an elevated base—is a classic pattern for squamous cell carcinoma.

Basal cell carcinoma, by contrast, more commonly shows a pearly, translucent or skin-colored bump with fine blood vessels and gradual growth, and although it can ulcerate, its typical surface and progression are different. Malignant melanoma usually features changes in color and irregular borders or asymmetry rather than a crusted, wart-like surface on an elevated base. The nonstandard option doesn’t correspond to a recognized skin-cancer diagnosis.