A 14-year-old boy who presented with a painful right testis. The testis was enlarged, reddened and acutely tender to touch but the spermatic cord was normal. There were no urinary symptoms but there was a past history of bilateral dartos pouch orchidopexies, 6 years earlier, for ectopic testes. Routine urine testing was normal, excluding significant infection.
Scrotal ultrasound and Doppler’s study were done. (Images attached) What are the differential diagnoses? What is the finding from the imaging studies? What can be the immediate management?