Epididimo-Orchitis

Etiology: Staphylococcus aureus / Escherichia coli / viruses (in addition to sexually transmitted diseases)
US: hypervascularity of affected epididymis and or testicle when compared with contralateral side

Cases of Epididimo-Orchitis

US of epididymitis secondary in Henoch-Schonlein Purpura — Transverse color doppler US of the scrotum shows enlargement and hypervascularity of the bilateral crescent shaped epididymides when compared to their respective round testicles, to which they are lateral in position.

US of epidimo-orchitis — Sagittal and transverse greyscale US of the left testicle (above) show a heterogenous appearance of the left testicle. Sagittal color doppler US of the left testicle shows increased blood flow to the left testicle and there was also increased blood flow to the left epididymis (not pictured).