Enlargement of the testicle or the adjacent tissues within the scrotum. Benign and painless enlargements encompass conditions like epididymal cysts, hydroceles, varicoceles, and spermatoceles. Testicular cancer is an uncommon trigger for swelling; in such cases, the swelling is typically devoid of pain. Painful enlargement might arise from a direct impact, testicular torsion, orchitis (testicle inflammation), or epididymo-orchitis (inflammation of the testicle and epididymis). Swift evaluation by a physician is essential for any testicular swelling. An ultrasound scan might be employed to assist in the diagnostic process.