Abstract

Aim: Orchidopexy is generally performed after the first year of life. The aim of this study is to measure the testicular volume and resistive index of boys with undescended testis by color Doppler Ultrasonography within the first year of their life.

Material and Method: In a year period, TV of 14 patients and RI of 13 patients with unilateral undescended testis who under one year old were measured by color Doppler Ultrasonography and recorded.

Results: The mean age of the patients was 5.7 months (ranged from 0 to 11 months). Undescended testis was left sided in the 8 (57.14 %) and right sided in the 6 (42.85 %) patients. The mean testicular volume for descended testis was 0.62±0.20 ml and for undescended testis was 0.47±0.23 ml. The difference was statistically significant (P<0.008). The undescended testicular volume was decrease in the 12 patients (85.71 %), equal in the 1 (7.14 %), and increase in the 1(7.14 %) patient according to contra lateral side. The mean ratio undescended to descended testicular volume was 0.74±0.22. The mean resistive index for descended testis was 0.56±0.046 and for undescended testis was 0.63±0.045. The difference was statistically significant (P<0.001). Resistive index for undescended testis was increase in the 11 patients (84.61 %), equal in the 1 (7.69 %), and decrease in the 1 patient (% 7.69) according to contra lateral side.

Conclusion: Testicular volume, the structure, and resistive index are indirect signs of testicular degeneration. The decrease in the testicular volume and increase the resistive index of undescended testis in our study made us consider the degeneration of the tissue within the first year of life.