Prognostic factors in the surgical treatment of azoospermia
1989
Summary— Surgery for male obstructive infertility is not always successful. A number of clinical and operative findings, not previously reported, may influence the outcome. We have studied 182 patients with azoospermia who underwent vasoepididymostomy. The pre-operative and operative findings which adversely affected the function of the anastomosis were identified. The presence of spermatozoa in the semen sample was taken to mean a successful anastomosis. Abnormal testicular histology was an adverse pre-operative finding. Adverse operative findings included non-canalisation of the epididymal tubules and hypoplasia of the epididymis; both factors were associated with a high failure rate (almost 100%). The anastomosis was a failure in 78% of the patients when no fluid was seen on sectioning the epididymis. In the absence of adverse findings the success rate of vasoepididymostomy was 59%. Pre-operative testicular biopsy, together with careful observation and recording of findings before and during surgery, are recommended to avoid needless exploration and anastomosis.
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