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  • Title: [Study of hair in type I tricho-rhino-phalangeal syndrome].
    Author: Lalević-Vasić BM, Nikolić MM, Polić DJ.
    Journal: Ann Dermatol Venereol; 1994; 121(9):618-22. PubMed ID: 7771728.
    Abstract:
    Trichorhinophalangeal syndrome has three characteristic signs: slow-growing hair, pearshaped nose with high philtrum and bradyphalangia with wedge-shaped epiphyses. We report two familial cases of type I trichorhinophalangeal syndrome. Our aim was to better identify the hair anomalies. A 22-year-old boy and his 65-year-old mother had thin sparse hair with recessed fronto-temporo-occipital hair lines. The trichogramme of the occipital region showed 52% dystrophic roots and 48% telogenic roots. Polarized light revealed monochromal hair with clear << finger-end >> rhexis. Electron scan microscopy showed thin, oval, flat or cannulated hairs and folded cuticle cells. A transverse zone in the prerhexis area had no cuticle cells and << finger-end >> fractures. Histological examination showed a normal follicle count. Sebaceous and sudoriparous glands were normal. Other characteristics of trichorhinophalangeal syndrome (facial deformity with pear-shaped nose with high philtrum, clinobrachydactylia of the fingers and toes, and radiologically wedge-shaped epiphyses) were also noted. Caryotypes were normal. We emphasize the importance of folded cuticle cells and clear rhexis leading to << finger-end >> fractures. These anomalies could serve as markers in cases with few suggestive signs.
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