Patients and Methods The study was performed prospectively with the approval of the Local Human Ethics Committee. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. All patients included in the study were provided with a patient consent form.
Study Group The analysis included male patients who were younger than 17 years and possessing one-sided inguinal hernia, hydrocele, or cord cyst and who were otherwise healthy. The study was performed prospectively between April 2016 and June 2016 in a medical faculty pediatric surgery unit.
Study plan Following diagnosis, patients received a CDUS and testicular volume and blood flow were measured preoperatively. All patients then received surgery with modified Ferguson repair. Testicular volume and blood flow were then reassessed by CDUS on days 7 and 30 following surgery.
Radiological evaluation Radiological evaluation was performed by a single radiologist using color doppler ultrasound (CDUS) preoperatively and on days 7 and 30 post-surgery. Longitudinal, anteroposterior, and transverse diameters of the testis were measured, and the testicular volume was calculated automatically using the CDUS device (volume = 0.523 × D1 × D2 × D3, where D1, D2, and D3 were the maximal longitudinal, anteroposterior, and transverse diameters defined by CDUS) for both testicles in each patient [1]. Peak systolic velocity (PSV) was calculated using the CDUS system (in cm3/s) for both testicles in each patient.
Statistical analysis The SPSS 15.0 (Statistical Package for the Social Sciences) software package was used for all statistical analysis. Testicular volumes and blood flow were analyzed as mean±standard deviation. The Mann-Whitney U test was used to compare differences in testicular volume and blood flow between the testis receiving surgery and the contralateral testis. Differences in preoperative, early postoperative (7 days post-surgery), and late postoperative (30 days post-surgery) testicular volume and blood flow of each testicle were compared using the Friedman test and P < 0.05 was accepted as statistically significant.
