الفهرس 
Material and methodsOnly 14 pages are availabe for public view
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Abstract
SUMMARY
A prospective study 000 cases of undescended testes were done in
the radiological department, Faculty of medicine, Zagazig University
hospital, Benha Hospitals during a period from April 2000 to October
2002.
The age of patients ranged between 1 year and 26 years old with a
mean age 9 years. There were 12 cases with right-sided undescended
testis, 10 cases with left sided undescended testis and remaining 8 cases
presented with bilateral undescended testes making a total of 38
undescended testis.
Ultrasonography, computed tomography and magnetic resonance
imaging were used to identify the location of the undescended testis with
an evaluation of the specificity, sensitivity and accuracy of each modality
as investigative instrument.
Ultrasonography identified 24 testes only 20 were truly positive, 14
testes were found in the inguinal canal 4 testes were found at the orifice
of internal inguinal ring, 4 testes were detected below the external
inguinal ring and only two testes of the intra-abdominal could be detected
by US. Specificity rate of US was 50% .Ultrasonography diagnosed 4
truly negative undescended testes with a sensitivity rate of 66%. The
overall accuracy of US was found to be 63 %.
Computed tomography identified 28 testes only 24 were truly
positive,14 testes were found in the inguinal canal 5 testes were found at
the orifice of internal inguinal ring, 5 testes were detected below the
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external inguinal ring and only 4 testes of the intra-abdominal could be
detected by CT. specificity rate of CT was 50% .Computed tomography
diagnosed 4 truly negative undescended testes with a sensitivity rate of
80%. The overall accuracy of US was found to be 73 %.
Magnetic resonance imaging identified 33 testes, only 3 I were
truly positive with a specificity rate of92%. MRI diagnosed 16 testes to
be in the inguinal canal ,4 testes at the internal orifice of the inguinal
canal,5 testes below the external ring of the inguinal canal and 8 testes
were found intra-abdominally. MRI diagnosed 3 testes to be absent, one
of them was truly negative with a sensitivity rate of 96%. Overall
accuracy ofMRI was found to be 92%.
All patients were followed up after laparoscopy and open surgery
as a confirmatory procedures. The correlation was done between the data
obtained from each of UIS ,CT and MRI modalities and the end results
reached from the laparoscopy and open surgery.
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