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Klinefelter syndrome, often linked with an extra X chromosome, can make natural conception very difficult. Many men only discover the condition during fertility tests, after a semen analysis shows azoospermia, meaning no sperm seen in the ejaculate. That result can feel overwhelming, especially when fatherhood has always been part of the plan.

Azoospermia means no sperm were seen in the semen sample tested. It sounds absolute, but it is a finding, not a final verdict on fatherhood. Some men produce sperm that cannot get out because of a blockage. Others make very low levels of sperm that may still be found directly in the testicle. Some have hormone-related causes that can be treated.

A lump in the groin or scrotum can cause immediate worry, especially when the diagnosis involves a term few people have ever heard. Spermatic cord masses are rare, and some types, including paragangliomas, are so uncommon that many clinicians may see very few in practice.

A new lump or swelling in the scrotum can make the mind jump to the worst possible explanation. In many cases, the cause is benign and treatable. A varicocele is one common reason, but it is not the only one. Rarely, a lump near the testicle can come from the spermatic cord, the structure that carries blood vessels, nerves, lymphatics and the vas deferens to and from the testis.