RT Journal Article SR Electronic T1 "Cutis tricolor": congenital hyper- and hypopigmented macules associated with a sporadic multisystem birth defect: an unusual example of twin spotting? JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 676 OP 678 DO 10.1136/jmg.34.8.676 VO 34 IS 8 A1 Happle, R A1 Barbi, G A1 Eckert, D A1 Kennerknecht, I YR 1997 UL http://jmg.bmj.com/content/34/8/676.abstract AB An uncommon coexistence of circumscribed hyperpigmentation and hypopigmentation, in close proximity to each other, is described in a 17 years old patient with various other cogenital defects, such as dysmorphic facial appearance, severe kyphoscoliosis, delayed motor development, epileptic seizures, and mental retardation. We suggest the combination of hyper- and hypopigmented cutaneous lesions is an example of allelic twin spotting. Because the skin of this patient showed three different degrees of pigmentation the term "cutis tricolor" is proposed.