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  • Title: Diagnosis and treatment of post-herniorrhaphy vas deferens obstruction.
    Author: Matsuda T.
    Journal: Int J Urol; 2000 May; 7 Suppl():S35-8. PubMed ID: 10830816.
    Abstract:
    Childhood inguinal herniorrhaphy (IH) is one of the most frequent causes of seminal tract obstruction. The incidence of vasal obstruction was found to be as high as 26.7% in subfertile patients with a history of childhood IH. The distal end of the vas deferens was found at the internal inguinal ring or in the pelvic cavity in 56.7% of cases, more than 3 cm of the vas deferens had been resected in 37.9% of cases, and sperm was found in vasal fluid in 45.5% of cases during corrective surgery. Microsurgical two-layer vasovasostomy resulted in the postoperative appearance of sperm in 39% of patients. In patients with postoperative azoospermia, a secondary epididymal obstruction caused by a long-term vasal obstruction is a highly probable cause. Ipsilateral epididymovasostomy following successful inguinal vasovasostomy results in the postoperative appearance of sperm in the ejaculate in 100% of the patients and a subsequent natural pregnancy rate of 50%. The overall pregnancy rate among couples, following surgery in 18 patients, was 43%, excluding pregnancies achieved by in vitro fertilization or intracytoplasmic sperm injection. Microsurgical reanastomosis of the seminal tract resulted in high impregnation rates among partners of patients with seminal tract obstruction caused by childhood IH. After receiving sufficient information on each treatment modality, patients can choose their preferred treatment, either reanastomosis of the seminal tract or assisted reproductive technology using epididymal or testicular sperm.
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