I am not aware of a superficial cut or laceration being associated with an increased risk of testicular cancer.
If cancer is a concern, a scrotal ultrasound can be done to ensure there aren't any masses present.
This option 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.