Summary
A male patient presented with a congenital ichthyosis clinically characterized by generalized erythroderma, fine scaling on the trunk and palmoplantar hyperkeratoses with severely affected nails. The acanthotic epidermis was characterized by hyperproliferation with a large quantity of mitoses and extremely suppressed keratinization without a normal granular layer. The horny layer was parakeratotic and contained remnants of cell debris and lipid droplets. Ultrastructurally the prickle cell layer was characterized by binuclear cells, oedematization of the keratinocytes and isolated dyskeratotic cells. Some suprabasal cells showed unusual morphological features, containing nuclei with cytoplasmic pseudoinclusions, sometimes leading to a complete disintegration of the nuclear structure, and bowl- and lens-shaped accumulations of a filamentous material. Instead of normal tonofibrils, the aggregated material consisted of fine interlacing filaments. The latter are compared with the filamentous shells in ichthyosis hystrix Curth-Macklin and congenital reticular ichthyosiform erythroderma. The clinical symptomatology — congenital ichthyosis, growth retardation, secondary hypogonadism, hepatomegaly — and the ultrastructural characteristics of the keratinization disorder indicate that the present case cannot be considered as a subtype of the recessively inherited ichthyosis congenita group, but suggest a new syndrome as a separate nosologic entity.
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Arnold, M.L., Anton-Lamprecht, I. & Albrecht-Nebe, H. Congenital ichthyosis with hypogonadism and growth retardation — a new syndrome with peculiar ultrastructural features. Arch Dermatol Res 284, 198–208 (1992). https://doi.org/10.1007/BF00375793
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DOI: https://doi.org/10.1007/BF00375793