A urologist would have evaluated for a true scrotal emergency, such as testicular torsion.
Other causes of scrotal swelling can include a hydrocele, varicocele, cancer or a cyst. A scrotal ultrasound would be the initial test of choice for these possibilities.
This option can be discussed with your 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.