Wound, Ostomy and Continence Nurses Society (WOCN) Practice Exam

Which condition is indicated by a small circular lesion surrounded by callus?

1. Xerosis

2. Paronychia

3. Plantar wart

4. Onychomycosis

The correct answer is: Plantar wart

A small circular lesion surrounded by callus is indicative of a plantar wart. Plantar warts often appear on the soles of the feet and can become surrounded by a thick layer of callused skin due to pressure and friction from walking or standing. This callus forms as the body's response to the wart, trying to protect the skin underneath. Unlike other conditions listed, such as xerosis, which refers to dry skin without associated lesions, paronychia, which involves inflammation around the nail, and onychomycosis, a fungal infection of the nails, plantar warts are specifically characterized by their circular shape and the callus that forms around them as a consequence of their location and pressure. Recognizing the specific nature of the lesion and its surrounding characteristics can help in accurate diagnosis and management.