Question

select the medical term that means malformation of the nails in which the outer surface is concave or scooped out like the bowl of a spoon. clubbing onychocryptosis paronychia koilonychia

Explanation:

• Clubbing refers to the thickening and widening of the fingertips/nails, not the described concave nail malformation.
• Onychocryptosis is ingrown toenail, which is about nail growth into the skin, not concave nails.
• Paronychia is an infection around the nail, not a nail shape malformation.
• Koilonychia is the medical term for spoon - shaped nails, matching the description of a nail malformation with a concave outer surface.

Answer:

D. koilonychia