<prompt> A patient of 18 years of age presents with sudden agonising pain in the groin and the lower abdomen. The patient feels nauseaand gives a history of vomiting. On physical examination, the testis seems high. The cremasteric reflex is lost. What is the mostpossible cause?Epididymo-orchitisMumps orchitisIdiopathic scrotal edemaTesticular torsion  <response>: Testicular torsion is most common between 10 and 25 years of age, although a few cases occur in infancy.Typically, there is sudden agonising pain in the groin and the lower abdomen. The patient feels nauseated and may vomit.Torsion of a fully descended testis is usually easily recognized. The testis seems high and the tender twisted cord can be palpated above it.The cremasteric reflex is lost 