Multiple sequences MRI in diagnosis of non-palpable undescended testis
10.3760/cma.j.issn.1674-6090.2015.01.016
- VernacularTitle:多序列MRI成像对不可触及隐睾及恶变的诊断价值与术前评估
- Author:
Liping WANG
;
Yongren WANG
;
Wei HUANG
;
Hui ZHU
- Publication Type:Journal Article
- Keywords:
Non-palpable undescended testis;
Magnetic resonance imaging;
Diffusion weighted imaging;
Malignant;
Lymph node
- From:
Journal of Endocrine Surgery
2015;9(1):56-59
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the role of multiple sequences MRI in diagnosis and preoperative evaluation of non-palpable undescended testis.Methods 58 patients with unilateral or bilateral non-palpable undescended testis underwent abdominal and pelvic MRI 2 weeks before surgery.Multiple sequences MRI included diffusion-weighted imaging(DWI)with b values of 400 and 800 s/mm2,T1 and T2-weighted sequence,and T2-weighted fat-suppressed sequence.Preoperative images including the conventional MRI images,DWI images,and the conventional-MRI and DWI images together.ADC value was detected.Pathological findings were used as the gold standard to evaluate the diagnostic accuracy of multiple sequences MRI in detection of non-palpable undescended testis and its differential diagnosis with lymph nodes.Results The combination of DWI and conventional MRI was the most sensitive method in detection of non-palpable undescended testis,with the sensitivity,specificity and accuracy of 96.5％,87.5％,and 95.3％,respectively.Malignant non-palpable undescended testes were all detected.The ADC value of the non-palpable undescended testis,lymph nodes and malignant non-palpable undescended testis was(1.18 ± 0.17) × 10-3 mm2/s,(1.49 ± 0.27) × 10-3 mm2/s,and (0.84 ± 0.20) × 10-3mm2/s,respectively.The difference had statistical significance (P ＜ 0.05).Conclusion Multiple sequences MRI improves the diagnostic accuracy of non-palpable undescended testis,which can be routinely used in preoperative evaluation of non-palpable undescended testis.
