Ultrasonography and colour Doppler flow in the testes of adult patients after treatment of cryptorchidism.

Abstract

To analyse the prevalence of post-operative structural, parenchymal and vascular testicular abnormalities and the incidence of epididymal abnormalities in adult men treated for undescended testes in childhood. The testes and epididymi of 76 adult men treated for cryptorchidism in childhood were evaluated 16 to 27 years after treatment, using colour Doppler ultrasonography. The 61 spontaneously descended testes were significantly (P < 0.01) larger (mean [SD], 22 [8] mL) than the 90 undescended testes (13 [6] mL). The echo pattern in all the spontaneously descended testes was normal, whereas in 15 cases (17%) the testicular tissue was abnormal after cryptorchidism. In 12 of these 15 cases, the echo pattern was very irregular, and two other cases had microlithiasis of the testicular parenchyma, one of them bilaterally. No normal testicular artery was detected in two cases (3%) of normally descended testes, against 18 (20%) amongst those with undescended testes. Epididymal abnormalities were found in two (3%) of the group of normally descended testes against 32 (36%) in the undescended group. Infertility in patients with cryptorchidism may be a result not only of primary parenchymal degenerative changes of the testis directly due to the condition, but also of operative vascular trauma and epididymal anomalies. Operative trauma may be more common than has generally been believed. Ultrasonography is a suitable method to evaluate post-operatively the prevalence of the testicular abnormalities analysed in the present study.