الفهرس 
EMBRYOLOGY AND ANATOMY OFOnly 14 pages are availabe for public view
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Abstract
Introduction: Undescended testis or cryptorchidism, a condition in which one or both testicles are not appropriately positioned in the scrotum at birth. It is the most common congenital genitourinary anomaly in boys and has an incidence of 1–3% in term and 15–30% in premature male infants. approximately 20% of undescended testes are nonpalpable and either located in the abdomen or the canaliculi, or atrophic or are completely absent. Cryptorchidism is associated with impaired fertility, inguinal hernia, and increased risk of testis cancer.
Aim of the work: The aim of the work is to assess the value of adding diffusion-weighted sequences (DWI) to routine magnetic resonance imaging (MRI) in identifying and locating nonpalpable undescended testes.
Summary and conclusion: Cryptorchidism is the absence of one or both testes in the scrotum The term ‘non-palpable testes’ implies that the testes cannot be detected on physical examination; they are intra-abdominal, absent, vanishing or atrophic. Additional MRI assessments, as fat-suppressed T2WI and DWI are useful methods to improve the accuracy and sensitivity of diagnosis of non-palpable testes.