Chronic schistosomiasis of the urinary tract can present with symptoms unrelated to the disease. A 33-year-old man from Edo State Nigeria presented with recurrent left flank pain. Laboratory investigations did not reveal any cause. Radiological investigation revealed a stricture of the left ureter and hydronephrosis of the left kidney. Management included surgical excision and antischistosomiasis chemotherapy. Histopathological examination of specimen of the ureter obtained after surgical exploration revealed Schistosoma heamatobium ova in the wall of the ureter.