Impalpable testes--is imaging really helpful?

The study evaluated the role of imaging studies in the diagnosis of impalpable undescended testes. A total of 40 children referred with 45 impalpable undescended testes had an ultrasound scan and clinical examination by a pediatric surgeon. 22 out of these 45 testes were found to be palpable on clinical examination by a pediatric surgeon. Of the remaining 23 boys (23 units of testes), 21 underwent MRI scan for identification of testes and results were compared with findings at laparoscopy. The diagnostic agreement of ultrasound and MRI in correctly localizing the testes was 19% and 52% respectively whereas the sensitivity of detection was 60% and 55% respectively. Imaging studies therefore have a limited role in pre-surgical evaluation of boys with impalpable testes.