Reproductive system

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Few SIOD patients have reached sexual maturity and of the ones who have, no children were subsequently born. However, the patients who have survived to adulthood did develop with secondary sexual characteristics and the women have menstrual cycles. The autopsy of two affected males revealed that sperm production was affected in a varying degree. In one patient, the testes showed interstitial fibrosis and absence of sperm (azoospermia), whereas the other had less interstitial fibrosis individual and produced some sperm.

- National Organization for Rare Disorders

https://rarediseases.org/rare-diseases/schimke-immuno-osseous-dysplasia/