A mass from the scrotum. If a varicocele is large more than enough, a mass just like a "bag of worms" might be obvious higher than the testicle. A more compact varicocele might be too smaller to find out but recognizable by touch. Repeating a specific motion working day following https://www.sgvascularctr.com/what-are-veins-and-why-should-i-know-about-them/