A circumferential fingernail--fingernail on the palmar aspect of the finger.
D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D002906:Chromosomes, Human, 6-12 and X; D005385:Fingers; D006801:Humans; D007223:Infant; D008297:Male; D009264:Nails, Malformed / Q000151:congenital* / Q000235:genetics