The paper reports the authors' personal experience regarding the use of magnetic resonance imaging in the diagnosis of cryptorchidism. The result of the study of 13 patients with non-palpable gonads, who all underwent surgical confirmation (with positive outcome in 66% of cases), encourage the use of this non-invasive method with a high anatomic resolution, which can be used to diagnose both the site, dimensions and possible structural alterations of the gonad.