The role of ultrasonography as a routine investigative test for diagnosing testicular pathologies (in-utero and postnatally) cannot be overemphasized. Undescended (cryptorchid) testis according to literature is prone to neoplastic transformation. Determination of fetal gender in-utero by ultrasound allows for sex determination albeit; its full ethical implication should be considered. 3D ultrasonography is affordable, ubiquitous, reproducible and ensures rapid evaluation of a wide array of testicular pathologies, early (coincidental) diagnosis is important to avoid complications (such as torsion, bleeding or malignant-mass-formation) thus; sonar imaging features as an indispensable tool. The case aims to document and highlight accidental detection (at 31 weeks gestational age) and expunge on the accuracy of ultrasonography in diagnosing cryptorchidism. There is sparse (Nigerian) literature on Undescended Fetal Testis (UDFT). This report used antenatal imaging as a clear descriptive evidence of faulty testicular descent with detailed examination of the fetal genitalia. Ultrasound examination during the 3rd semester allows for accurate cryptorchid diagnosis (prenataly).
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