Testicular hypertrophy as a predictor for contralateral monorchism: Retrospective review of prospectively recorded data

Impact of Preoperative Ultrasonographic Evaluation for Detection of a Viable Testis in Patients With a Unilateral Nonpalpable Testis

“…10,12,[16][17][18] When an orchidometer was used for evaluation of testicular volume, the cutoff value for contralateral compensatory hypertrophy was usually 2.0 mL. 10,12,15 Our cutoff values for testicular length and volume were 15.1 mm and 0.54 mL, respectively, which were relatively smaller than in previous studies that did not use US. Son et al 14 reported that their cutoff values for testicular length and volume on US were 16.1 mm and 0.59 mL, similar to our results.…”

“…The cutoff values for testicular diameter as estimated by using a ruler or caliper ranged from 18 to 21 mm . When an orchidometer was used for evaluation of testicular volume, the cutoff value for contralateral compensatory hypertrophy was usually 2.0 mL . Our cutoff values for testicular length and volume were 15.1 mm and 0.54 mL, respectively, which were relatively smaller than in previous studies that did not use US.…”

“…21,22 Thus, estimation using US may be more accurate than that using an orchidometer. 15 Based on these facts, our cutoff values for US may achieve greater precision compared to other methods without US.…”

“…Ultrasonography can also exclude the inappropriate inclusion of the epididymis, scrotal skin, and adjacent soft tissue during the measurement . Thus, estimation using US may be more accurate than that using an orchidometer . Based on these facts, our cutoff values for US may achieve greater precision compared to other methods without US.…”

“…It has been reported as a valuable tool for determining the existence or location of nonpalpable testes when they are visualized on US . In addition, contralateral compensatory testicular hypertrophy as measured by several tools, including US, has been demonstrated to correlate with surgical findings in patients with a unilateral nonpalpable testis. On the basis of these facts, we speculated that the combination of preoperative US findings for both affected and contralateral testes would predict the presence or absence of an affected testis in patients with a unilateral nonpalpable testis more precisely because of the advances in US equipment.…”