Ultrasonographic Findings of Mumps Orchitis and Epididymo-Orchitis

To determine ultrasonographic findings of mumps epididymo-orchitis to differentiate from other causes of epididymo-orchitis. We retrospectively analyzed the sonographic findings of 11 cases of mumps epididymo-orchitis in 10 patients. US findings were analyzed in terms of echogenicity, size, hydrocele, and calcification. The age of patients ranged from 12 to 27 years (average 16.6 years). A total of 11 lesions were involved testis : 2 lesions were located in left, 7 lesions in right, and bilaterally inone patient. Sonographic findings consisted of diffusely enlarged homogenous hypoechoic in 6 cases, diffusely enlarged in homogenous hypoechoic in 3 cases, and diffusely enlarged isoechoic testis in 2 cases. A total of 7 cases were involved epididymis : 5 cases were located in the head, and 2 in the tail. The sonographic finding of epididymitis was enlarged epididymis with heterogeneous hypoechoic pattern. The hydroceles were also seen in 5 cases. It is difficult to differentiate mumps epidydimo-orchitis from other infectiou sepididymo-orchitis only on the basis of ultrasonographic findings, but the clinical history of mumps can be helpful in diagnosis of this disease