The morphology of extracted testicular sperm correlates with fertilization but not pregnancy rates

To investigate sperm morphology on the day of fresh testicular sperm extraction (TESE) with intracytoplasmic sperm injection (ICSI), and its effect on fertilization and pregnancy rates, as TESE in conjunction with ICSI results in high fertilization and pregnancy rates in most patients, but to our knowledge only one small study has assessed the morphology of retrieved sperm and found no correlation with the success of fertilization.

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