The best test at this point would be an ultrasound. There can be many causes of lumps, including cancer, cysts, hydroceles or varicoceles. Before proceeding, an ultrasound would rule out many of these possibilities.
This options can be discussed with your personal physician, or in conjunction with a urologist.
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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