Diffusion-Weighted Imaging Plus MRI Identifies Undescended Testes
Authors say diagnostic laparoscopy not needed for inguinal testes or nubbins.
(HealthDay News) -- Combined diffusion-weighted imaging (DWI) and magnetic resonance imaging (MRI) show a greater performance compared to conventional MRI alone for identification of non-palpable undescended testes (UDTs), according to a study published online in the Journal of Medical Imaging and Radiation Oncology.
Sally Emad-Eldin, MD, from Cairo University Hospitals, and colleagues evaluated the diagnostic performance of combined DWI and conventional MRI, including fat-suppression T2WI, for identification and localization of non-palpable UDTs in 40 consecutive patients with 47 non-palpable undescended testes (33 unilateral cases and 7 bilateral cases; mean age 7.5 years).
The researchers found that the final diagnoses of the location of UDTs based on laparoscopy findings were: intra-canalicular (18 cases), low intra-abdominal (6 cases), and high intra-abdominal (5 cases). There were 18 cases of absent or vanishing testes. Combined DWI and conventional MRI had a diagnostic accuracy, sensitivity, and specificity of 95.7, 93.5, and 100%, respectively.
"Based on our findings, we can obviate the need for diagnostic laparoscopy in patients who had preoperative detection of inguinal testes or nubbins," the authors write.
- Emad-Eldin S, Abo-Elnagaa N, Hanna SAZ, and Abdel-Satar AH. The diagnostic utility of combined diffusion-weighted imaging and conventional magnetic resonance imaging for detection and localization of non palpable undescended testes. Journal of Medical Imaging and Radiation Oncology. doi:10.1111/1754-9485.12458.