Testicular Two‐Dimensional Shear Wave Elastography, Peak Systolic Velocity, Volume and Epididymal Thickness: Establishment of Normal Reference Values and Discrimination From Orchitis in Adult Patients Presenting With Acute Scrotal Pain

Normal adult testes have a median stiffness of 2.5 kPa. A threshold cut-off median value of 3.6 kPa suggests the diagnosis of an inflammatory testicular pathology such as orchitis, with AUC, accuracy, sensitivity and specificity of 0.922, 0.840, 0.928 and 0.831. Caution is required in the presence of extra-testicular pathology, where there is a wider range of SWE and other parameters.