Thanks for your query.Based on the facts that you have posted your father who may have uncontrolled Diabetes
has developed Fournier;s Gangrene
of the scrotum.It is a inflammation followed by necrosis
of a subcutaneous tissue
up to facial planes in scrotum and Penis.The reports of the RGU and MCU that you have posted do not reveal involvement of either Bladder or Urethra .So you need not worry at all .He needs secondary suturing of the wound and proper monitoring of his Blood Sugar levels.