Clinical spectrum of steroid sulfatase deficiency: X-linked recessive ichthyosis, birth complications and cryptorchidism

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Abstract
When boys affected with steroid sulfatase deficiency are delivered, the lack of the enzyme in the placenta may cause birth complications. In postnatal life this gene defect gives rise to X-linked recessive ichthyosis. In a series of 25 patients birth complications were reported in 9 cases. Of these boys, 4 displayed bilateral inguinal cryptorchidism and one was affected unilaterally. In a further boy we obsered unilateral inguinal cryptorchidism without a history of birth complications. In one patient who had been delivered by forceps, abdominal bilateral cryptorchidism resulted in severe hypogenitalism. A review of the literature revealed 30 cases with X-linked recessive ichthyosis displaying hypogenitalism or crytorchidism or both. In conclusion, cryptorchidism should be considered as a further clinical manifestation of steroid sulfatase deficiency.