A case of testicular plasmacytoma, a very rare neoplasm, is presented. The
gray-scale and power Doppler sonographic findings are illustrated. The lesi
on appeared as a hypoechoic, intratesticular mass that was markedly hyperva
scular. When marked hypervascularity is present in a testicular mass in a p
atient unlikely to have orchitis on clinical grounds, plasmacytoma should b
e considered in the differential diagnosis. (C) 1999 John Wiley & Sons, Inc
. J Clin Ultrasound 27:345-346, 1999.