Transverse testicular ectopia detected by MR imaging and MR venography
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Updated: Oct 2, 2026

Combined Supine and Standing Imaging for Varicocele: An Improved Diagnostic Approach
Published on: November 22, 2024
Wendy Wai-Man Lam1, Simon Dat Van Le, Kwong-Leung Chan
1Department of Radiology, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong. wmlam@ha.org.hk
Abstract:
Crossed testicular ectopia is a rare anomaly, characterised by migration of one testis towards the opposite inguinal canal. In most reported cases, the correct diagnosis was not made pre-operatively. We report a case of transverse testicular ectopia diagnosed pre-operatively with MRI. MRI and MR venography demonstrated unilateral location of both testes in the right inguinal canal, which was confirmed by surgery. We provide a brief literature review of transverse testicular ectopia and the imaging of undescended testis.
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