Objective: To compare the changes of testicular blood supply in the control group and patient group with varicocele and normal sperm parameters.

Material and Method: 40 patients with left varicocele and 25 healthy controls were enrolled in the study. All participants were performed color Doppler sonography to assess testicular blood flow of the both right and left testes. Blood flow parameters were measured in testicular, capsular and intratesticular arteries. Semen parameters were also assessed in the participants of the patient group. Testicular blood flow parameters were compared between the two groups.

Results: Mean ages of the patients and controls were respectively, 24,92±4,34 and 23,42±4,42(p>0,05). In the left testes; only the resistive index values of testicular artery were significantly lower in the patients (p=0,02). In the right testes; the resistive and pulsatility index values of testicular artery were significantly lower in the patients (p=0,01; p=0,01).

Conclusion: Most of testicular blood flow parameters in the both testes were similar. These may be the result of the normal semen parameters of the patients. We suggest that testicular blood flow in patients with varicocele and normal sperm parameters should be investigated by further studies with long term follow up.