Orchitis is best described as:

• A. Inflammation Of The Scrotum
• B. Inflammation Of One Or Both Testes, Swollen, Tender, Extremely Painful; Common In Mumps, Can Cause A Hydrocele
• C. Proliferation Of Spermatozoa
• D. Fibrosis Of The Corpus Cavernosum

Answer: (B)

Orchitis is inflammation of one or both testes. The defining idea is inflammation tied specifically to the testicular tissue, which explains the swelling and tenderness that are typically very pronounced and painful. It’s commonly seen in association with mumps in older individuals and can be accompanied by a hydrocele due to fluid around the testis. This precise localization and the characteristic clinical picture make the description in the correct choice the best fit. Other options describe different structures or processes—scrotal inflammation without pinpointing the testis itself, proliferation of sperm (spermatogenesis), or fibrosis of erectile tissue (corpus cavernosum)—which do not capture orchitis.