en Urology Urology پژوهشي Research <div><strong>Introduction: </strong>Despite the importance of thyroid hormones in reproduction, there are only a few studies that focus on male infertility. The objective of this study was to evaluate semen parameters in patients with hypothyroidism or hyperthyroidism.<br> <strong>Materials and methods:</strong> Totally, 28 patients with thyroid disorders were evaluated for the semen parameters. Serum TSH and T4 concentrations were measured by ELISA. Complete semen analyses were performed based on WHO.<br> <strong>Results:</strong> Pathozoospermia was seen in 32.14% of our patients. Two hyperthyroid patients and seven hypothyroid patients suffered sperm defects. None of pathozoospermia patients showed an alone sperm defects. Sperm multiple anomalies were our main findings.</div> <strong>Conclusion: </strong>It seems that sperm characterizes strongly were affected. Although, we have a limited sample size, but sperm multiple abnormalities made our interest findings. Infertility, Semen, Sperm abnormality, Hypothyroidism, Hyperthyroidism 47 50 http://jbrms.medilam.ac.ir/browse.php?a_code=A-10-326-1&slc_lang=en&sid=1 Hassan Niroomand hassanniroomand@ajaums.ac.ir 10031947532846002968 10031947532846002968 Yes Trauma Research Center, AJA University of Medical Sciences, Tehran, Iran Sima Binaafar s.binaafar@yahoo.com 10031947532846002969 10031947532846002969 No Trauma Research Center, AJA University of Medical Sciences, Tehran, Iran Moein Nasiri m.nasirof@gmail.com 10031947532846002970 10031947532846002970 No Trauma Research Center, AJA University of Medical Sciences, Tehran, Iran Nasrin Mansournia Nasrin_sept@yahoo.com 10031947532846002971 10031947532846002971 No Trauma Research Center, AJA University of Medical Sciences, Tehran, Iran Atoosa Bagheri Behzad Atoosa.bagheribehzad@yahoo.com 10031947532846002972 10031947532846002972 No Department of Gynecology, Moheb Yas Hospital, Tehran University of Medical Sciences, Tehran, Iran