In the hetereogeneous group of recessive congenital ichthyoses the disorder of desquamation seems to be a basic problem. Desquamation is strongly dependent on the normal lipid metabolism of the keratinocytes. We describe a group of patients who have a typical clinical picture of large scale ichthyosis and cholesterol clefts in the thickened corneal layer, evidencing a disturbance of the lipid metabolism of the skin. The corneocytes also show a thin or absent cornified envelope, which could indicate a disturbance of protein synthesis. These patients have a severe ichthyosis, but good general health and no associated symptoms. This disorder has recently been named ‘ichthyosis congenita type II’ by the Heidelberg group on the basis of electron microscopic findings. According to the present examination this group corresponds clinically to the currently used diagnosis ‘lamellar ichthyosis’.
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Niemi, K.-., Kanerva, L. & Kuokkanen, K. Recessive ichthyosis congenita type II. Arch Dermatol Res 283, 211–218 (1991). https://doi.org/10.1007/BF01106104
- Electron microscopy