Final answer:
The symptoms suggest a possible varicocele, which is an enlargement of the veins within the scrotum that can impact sperm production and lead to oligospermia. The testes produce sperm and hormones and are contained within the scrotum. A varicocele requires medical evaluation and can affect fertility.
Step-by-step explanation:
The concern described—a left testicle that is smaller than the right, with an enlarged spermatic cord that increases in size with valsalva, suggests a possible medical issue such as a varicocele. A varicocele is an enlargement of the veins within the scrotum and is often described as feeling like a bag of worms when the veins are enlarged. This condition can potentially affect sperm production and lead to oligospermia, a condition characterized by a low sperm count. The presence of the symptoms mentioned warrants further medical evaluation, typically starting with a physical examination followed by an ultrasound if necessary.
The testes are responsible for producing sperm and reproductive hormones, and are housed within the scrotum, along with blood vessels, nerves, and muscles related to testicular function. Each testis is divided into lobules containing seminiferous tubules where sperm production occurs. Abnormalities in size or function of the testes can result in various forms of male fertility issues, and varicocele is one notable cause of impaired sperm production or function.