Various types of scrotal masses or cysts can be considered, including varicocele, hydrocele, cancer, or epididymal cysts.
The most reasonable initial test would be a scrotal ultrasound. Most cases, except obviously cancer, of scrotal cysts are not dangerous and can be managed by your urologist.
To be safe, I would also obtain urine tests and undergo a prostate exam to evaluate for infection.
These options can be discussed with your personal physician.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
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