High ejaculate volume: a distinct entity?

In this study clinical, andrological and endocrinological data of a group of 101 patients with ejaculate volume of at least 8.0 ml are compared with data of 100 consecutive patients attending our infertility clinic. Within both groups correlations between different parameters are observed. Between both groups a significant difference in total sperm output is noted suggesting a 'dilution oligozoospermia' in the high ejaculate volume group. We suggest that, in order to avoid a falsely unfavourable fertility prognosis for those patients, total sperm output should be considered rather than sperm density. From the point of view of nomenclature, the term 'relative oligozoospermia' seems justified in cases with very high ejaculate volumes.