RESUMEN
OBJECTIVES:To present the histopathological pattern of urinary bladder neoplasms using the WHO/ISUP classification system and relate it to the outcome.METHODS:This study was conducted in the period from January 2004 through December 2005 at three centres in Khartoum; Sudan. One hundred and six patients with urinary bladder neoplasms were included in the study.RESULTS:The commonest affected age group was 60-80 years with male to female ratio 4.6:1. Urothelial neoplasms were found in 72 (67.9); Squamous cell carcinoma (SCC) in 26 (24.5); urothelial neoplasms with Squamous differentiation in 3 (2.8); and other types in 5 (4.7) of the patients.There were 43.4of the urothelial neoplasms graded as papillary carcinoma of high grade; 52.6papillary carcinoma of low grade;1.3papillary neoplasm of low malignant potential;1.3papilloma; and 1.3was graded as flat neoplasm.Of the SCCs; twelve (42.9) were poorly differentiated SCCs;nine (32.1) moderately differentiated; and seven (25) cases were well differentiated SCCs. Follow-up information was available in 32 patients.At last followup; fifteen (46.9) patients were dead of the disease; twelve (35.5) were alive with no evidence of disease; four (12.5) were alive with disease; and one (3.1) was alive and terminally ill Conclusion:Histological grade (P: 0.006); and muscle invasion (P: 0.002) were significantly associated with survival.A subset of the cases could not be assessed for muscle invasion due to inadequate sampling; we thus recommend proper trans-urethral bladder biopsy (TUBP) sampling