الفهرس 
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Abstract
Background: Urinary bladder carcinoma is one of the most common tumors among the lower urinary tract, it is the seventh common malignancy and widely distributed in developed countries.
Aim of the Work: to elucidate the diagnostic potential and additive imaging data obtained with multi-detector computed tomography (MDCT) in early detection and characterization of urinary bladder neoplastic masses by comparing the result of the study with the conventional cystoscopy results.
Patients and Methods:
This prospective descriptive study was conducted on forty patients, 36 was men and 4 women. The Patients referred to radio-diagnosis department, Ain Shams University hospitals, radio-diagnosis department in a period 6 months of data collection for suspicious bladder mass(es) after clinical assessment of patient or for further characterization of indeterminate bladder neoplastic mass lesion previously depicted on other radiological investigation as ultrasound examination.
Results: a statistically significant difference was found between positive and negative cystoscopic biopsy results for malignancy in relation to presence CT features of malignancy
Conclusion:
MDCT urography is useful for examination of patients especially when the CC is contraindicated such as hemorrhage, perforation, difficult to doing it or unsatisfactory in interpretation, and as a complementary technique in the evaluation of areas difficult to evaluate with CC, especially with the MDCT results satisfactory in finding lesions smaller than 5mm. MDCT urography gives us an opportunity for early detection bladder tumors because its reliability and accuracy and our results support that.