Which lesion is a round area of skin loss that may be accompanied by pus?

Which lesion is a round area of skin loss that may be accompanied by pus?

• A. Crust
• B. Ulcer
• C. Pustule
• D. Nodule

Answer: (B)

An ulcer is an open wound where the surface of the skin has broken down, revealing deeper tissue. It can be round or crater-like and may discharge pus if infection is present. This matches the description of a round area of skin loss that may be accompanied by pus. Crust is dried exudate on the surface, not true skin loss. A pustule is a small raised lesion filled with pus but not necessarily an area of skin loss. A nodule is a solid, raised lump beneath the surface with no open ulcer.

An ulcer is an open wound where the surface of the skin has broken down, revealing deeper tissue. It can be round or crater-like and may discharge pus if infection is present. This matches the description of a round area of skin loss that may be accompanied by pus.

Crust is dried exudate on the surface, not true skin loss. A pustule is a small raised lesion filled with pus but not necessarily an area of skin loss. A nodule is a solid, raised lump beneath the surface with no open ulcer.