Résumé
This study included 61 patients suffering from urinary bilharziasis. Patients were divided into three groups; group I included 34 patients with Ta and Tl tumors, group II included 5 patients with primary Tis and group III included 22 patients with urothelial atypia neither concomitant nor sequential to superficial bladder cancer. Patients in groups I and II were subjected to transurethral resection of the tumor. Intravesical immunotherapy [BCG in 16 patients and KLH in 13 patients] was applied to twenty-nine patients in group I, all patients in group II and two patients with severe urothelial atypia in group III. The results were similar to western literature regarding that tumor stage, grade multiplicity and associated urothelial atypia or Tis are the four principle prognostic factors in the natural history of superficial bladder cancer whether or not associated with vesical schistosomiasis. The incidence of recurrence was 25% in the BCG treated patients and 15.4% in the KLH treated patients which is also comparable with the results from western literature. Recurrence pattern occurred as the same stage and grade as the primary tumor except for pT1 GIII tumor which developed muscle invasion and the patient was subjected to cystectomy