It has recently been emphasized that the incidence of benign testicular les
ions is much higher than previously suspected. Sonography is reported to ha
ve a high sensitivity but poor specificity in the evaluation of intratestic
ular abnormalities. This report reviews the common and unusual lesions that
can mimic testicular tumour on ultrasound, and discusses the clinical and
sonographic features that may help to narrow the differential diagnosis and
guide management.