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  • Title: Phylloid pigmentary pattern with mosaic trisomy 13.
    Author: Horn D, Rommeck M, Sommer D, Körner H.
    Journal: Pediatr Dermatol; 1997; 14(4):278-80. PubMed ID: 9263307.
    Abstract:
    In most patients with hypomelanosis of Ito, the hypopigmentation is characterized by narrow bands following the lines of Blaschko. We report a 13-year-old severely retarded girl with leaf-shaped patches of hypopigmentation on the back together with short stature, scoliosis, facial dysmorphism, and asymmetrical leg length. The cytogenetic examination of both lymphocytes and fibroblasts demonstrated a mosaicism of 46,XX/47,XX+13. This result was confirmed by in situ hybridization using a chromosome 13-specific library in interphase cells. The pigmentary disturbance of our patient was similar to the phylloid pattern (type 3) of the classification of pigmentary patterns postulated by Happle. This type has been described in four patients so far, along with additional anomalies and a chromosomal mosaisicm in two patients.
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