Does the Contralateral Testicular Volume Decide the Need for Diagnostic Laparoscopy in Cases of Unilateral Impalpable Undescended Testis?

Purpose: This study aimed at the evaluation of the value of the estimated volume of a normal testis to predict the status of its contralateral impalpable side and hence decide the importance of laparoscopic exploration. Material & methods: Patients with unilateral impalpable maldescended testis - as confirmed by clinical and sonographic examination- were enrolled in this prospective interventional study between November 2018 and August 2022 at Elshatby University Hospital, Faculty of Medicine, Alexandria University. The volume and three-dimensional diameter of the normal contralateral testis were measured by the pre-operative US using the formula: Volume = L x W x H x π/6, where L is the length, W is the width, H is the height, and was correlated with the intra-operative laparoscopic findings.