الفهرس 
Introduction & Aim of WorkOnly 14 pages are availabe for public view
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Abstract
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.
Diagnostic imaging has been utilized to determine the anatomic location of non-palpable testes. Accurate pre-surgical localization of the testis could spare a child an operation in the setting of an absent testis or limit the extent of surgery if the testis can be definitively identified.
MRI is non invasive imaging tool, does not involve ionizing radiation and yields multiplanar images but it is sometimes less efficient in locating intra-abdominal functioning testicles and it fails to locate most of the atrophied testicles.
Additional MRI assessments, as fat-suppressed T2WI and DWI are useful methods to improve the accuracy and sensitivity of diagnosis of non-palpable testes.
The aim of this study was to evaluate the diagnostic potential of combined DWI and conventional MRI examination of the abdomen and pelvis in localization of UDT.
We prospectively evaluated 20 patients ranging in age from 5 months to 25 years (mean = 8.62 ± 6.91). 17 cases were clinically diagnosed having unilateral UDT (8 on the right side and 9 on the left side) and 3 cases having bilateral UDT, who were clinically diagnosed with non-palpable UDT )n=20).
MRI including T1WI, T2WI in addition to fat-suppressed T2WI sequence and diffusion-weighted images were performed to all patients. We compared the diagnostic performance of each MRI sequence for localization of UDT. MRI findings were were compared to laparoscopic findings.
According to the laparoscopic evaluation, the final diagnoses of the location of UDT were:
intracanalicular (n = 9 , 45%),
low intraabdominal (n = 7, 35%),
high intraabdominal (n = 2 , 10 %).
Whereas the testes were absent (testicular agenesis) in 3 case (15%)
We found that by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR by adding DW images to the conventional MR imaimaimages, both radiologistges, both radiologist ges, both radiologist ges, both radiologistges, both radiologistges, both radiologistges, both radiologistges, both radiologist ges, both radiologistges, both radiologistges, both radiologistges, both radiologistges, both radiologistges, both radiologistges, both radiologistges, both radiologistges, both radiologists performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of performed better in identifying the locations of the undescended testes. Asthe undescended testes. Asthe undescended testes. As the undescended testes. Asthe undescended testes. Asthe undescended testes. Asthe undescended testes. Asthe undescended testes. Asthe undescended testes. Asthe undescended testes. As the undescended testes. Asthe undescended testes. Asthe undescended testes. Asthe undescended testes. As the undescended testes. Asthe undescended testes. Asthe undescended testes. Asthe undescended testes. Asthe undescended testes. As the undescended testes. Asthe undescended testes. As combined DWI and conventional MRI had the highest accuracy (90%) , sensitivity (100%); and specificity of (90%) .
In addition, DWI was helpful in detection of testicular viability or atrophy properly before the operation as we could identify 16 cases of viable testes, 1 cases of atrophic testes, and we could identify 3 cases of testicular agenesis.
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