[A clinical study on primary XXXX ].

@entity1 @entity3930 @entity5 @entity812 @entity1606 @entity811 @entity703
Sixteen cases of @entity703 treated at our Department between July, 1971 and June, 1984, were reviewed. The sixth decade predominated over other age groups and occupied 47.3% of all cases (average: 63.9 years). The sex ratio was 4.3:1 with @entity3930 @entity1 predominating over female @entity1 . The incidence of the affected side was equal; 8 cases in the right and 8 cases in the left renal pelvis. The most common initial symptom was macroscopic @entity811 in 13 cases (81.2%), followed by @entity812 in 2 cases (12.5%). The major findings in IVP were filling defect in 11 cases (68.7%) and non-visualizing kidney in 4 cases (25.0%). Positive urinary cytology was obtained in 6 cases (49.1%) by voided urine specimen and 4 cases (50.0%) by catheterized urine specimen. Histologically, all cases were @entity1606 ; 11 of them were low stage and 5 were high stage at the initial diagnosis. Nine @entity1 (56.1%) were treated by total nephroureterectomy associated with partial cystectomy. The over all survival rate at 1,2,3,4 and 5 years was 86%, 78%, 78%, 68% and 68%, respectively, by the Kaplan-Meier method. The five year survival rate was 80% for the low stage group and 0% for the high stage group. (p less than 0.05, generalized Wilcoxon test). The five year survival rate was 83% for the low grade group and 40% for the high grade group. (p less than 0.05, Generalized Wilcoxon test) Among several factors, stage and grade of the @entity5 were the most influencing factors for prognosis.
