Inflammation of the epididymis. Its clinical features include enlarged epididymis, a swollen scrotum; pain; pyuria; and fever. It is usually related to infections in the urinary tract, which likely spread to the epididymis through either the vas deferens or the lymphatics of the spermatic cord. The disease is Monarch Disease Ontology term MONDO_0004779 (epididymitis). Also known as: epididymal, epididymis, epididymitis (disease).