Figure 1

(a,b,c,d) Gray-scale and Colour Doppler of epididymis US findings of these lesions, including enlarged epididymis and/or testis with heterogeneous echogenicity, are overlapping but CDUS findings are different (a). The inflamed epididymis and testis have increased blood flow whereas testicular torsion has decreased blood flow(b). The epididymal head is the most affected region, and reactive hydrocele and wall thickening are frequently present(c). Increased size and, depending on the time of evolution, decreased, increased, or heterogeneous echogenicity of the affected organ are usually observed (d).