Statistical Analysis of Patients with Ureteral Calculi

Analysis of 318 cases of ureteral calculi was carried out to provide information regarding the epidemiology, clinical course, and treatment results of this disorder. No distinct seasonal incidence was found. The majority of patients were over 30 years old, the peak incidence occurring in the fifth decade. Males outnumbered females by a three to one ratio in the over-all series. The incidence among Negroes was low. Hyperparathyroidism, diabetes, gout, collagen disorders, cholelithiasis, and pregnancy were infrequently encountered among the patients in the series. Pain was the most common symptom and began between midnight and noon in 75% of cases. Upper and midureteral stones and stones larger than 4 mm were most often removed by open operation, whereas low-lying stones and those measuring less than 4 mm were more frequently removed by cytoscopic means.