TESTICULAR ULTRASOUND REASON FOR EXAM: Left testicular swelling for one day. FINDINGS: The left testicle is normal in size and attenuation, it measures 3.2 x 1.7 x 2.3 cm. The right epididymis measures up to 9 mm. There is a hydrocele on the right side. Normal flow is seen within the testicle and epididymis on the right. The left testicle is normal in size and attenuation, it measures 3.9 x 2.1 x 2.6 cm. The left testicle shows normal blood flow. The left epididymis measures up to 9 mm and shows a markedly increased vascular flow. There is mild scrotal wall thickening. A hydrocele is seen on the left side. IMPRESSION: 1. Hypervascularity of the left epididymis compatible with left epididymitis. 2. Bilateral hydroceles.