Type : Phenotype or locus, molecular basis unknown;
Alternative titles and symbols : YNS; Lymphedema and yellow nails;
Description : Yellow nail syndrome (YNS) is classically considered to comprise a clinical triad
of yellow nails, lymphedema, and respiratory tract involvement. Two of these symptoms
are required for the diagnosis, since the complete triad is only observed in about
one-third of patients. Onset is usually after puberty (Hoque et al., 2007).;