testicular disorder orchitis http://purl.bioontology.org/ontology/MESH/D009920 http://purl.obolibrary.org/obo/DOID_2518 https://en.wikipedia.org/wiki/Orchitis https://www.wikidata.org/wiki/Q540850 N45.2 Inflammation of a testis. It has many features of epididymitis, such as swollen scrotum; pain; pyuria; and fever. It is usually related to infections in the urinary tract, which likely spread to the epididymis and then the testis through either the vas deferens or the lymphatics of the spermatic cord. orchitis and epididymitis