A 55-year-old man is experiencing severe pain of sudden onset in the scrotal area. It is somewhat relieved by elevation. On examination the nurse notices an enlarged, red scrotum that is very tender to palpation. Distinguishing the epididymis from the testis is difficult, and the scrotal skin is thick and edematous. What do these findings suggest?

A) A varicocele
B) Epididymitis
C) A spermatocele
D) Testicular torsion

Epididymitis presents as severe pain of sudden onset in the scrotum that is somewhat relieved by elevation. On examination, the scrotum is enlarged, reddened, and exquisitely tender. The epididymis is enlarged and indurated and may be hard to distinguish from the testis. The overlying scrotal skin may be thick and edematous. A varicocele can present with either a dull pain, constant pulling or dragging sensation, or be asymptomatic. Appearance upon inspection may be normal or the lighter scrotal skin may have a bluish color and the testis on side of varicocele may be smaller due to impaired circulation. When standing a soft irregular mass posterior to and above testis which feels like a "bag of worms" may be palpable and collapses when supine and then refills when upright. A spermatocele is usually a painless, round, freely movable mass lying above and behind testis and if large may feel like a third testis. Testicular torsion presents with sudden onset of excruciating unilateral pain in testicle; red, swollen scrotum with one testes (usually the left) higher owing to rotation of shortening; and extremely tender to palpation and difficult to distinguish epididymis from testis.