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An uncommon congenital abnormality known as crossed testicular ectopia (CTE) or transverse testicular ectopia (TTE) occurs when both testes migrate into the same hemiscrotum. Inguinal hernia and persistent Müllerian duct syndrome are frequently associated with it. We present a case of “TTE” in a 1-year-old boy with an empty right hemiscrotum and left inguinal hernia. TTE, first described by Von Lenhossek, can be diagnosed via ultrasound, with over 100 cases reported. Theories of its origin include developmental anomalies of the genital ridge and Wolffian duct fusion. Accurate diagnosis is crucial due to increased malignancy risks and complications in management.

Paid media are important resources used to recruit subjects in clinical trials. An index for evaluating which advertising resource has minimal cost and time requirement for patient accrual, for a given study design, has not been previously introduced. In this communication the authors present a new index, the Cost-Time Index, which represents a measure of the average amount of money and time spent, simultaneously, on a given advertising resource to recruit one analyzable subject. This index can be calculated using retrospective data and may be a useful tool for comparing recruitment efficiencies among various resources. The authors demonstrate the utility of the Cost-Time Index and recommend its use as an additional variable in future studies regarding recruitment strategies in clinical trials.