Lymphangiography is the radiologic study that is not routinely performed because of its technical difficulty and highly skillful procedure. In cases of lymphoma and metastatic cancer of lymphatics, however, lymphangiography has a significant role in staging of tumor, determination of the therapeutic plan, follow-up study and evaluation of prognosis. The authors present 2 cases of successful lymphangiographies recently performed on seminoma and a penile carcinoma at Department of Radiology, Ewha Womans University Hospital

The etiology of congenital hydronphrosis are obstruction of urinary tract, underdevelpment of ureteral musculature and abnormality of nerve innervation in fetal life. The onset of symptom congenital hydronephrosis appears later and there are irreversible change of renal paranchyme in most cases. Therefore require early diagnosis and treatment. We experienced a case of congenital hydronephrosis containing about 1,500cc of hydronephorotic fluid, which was caused by congenital ureteropelvic junction stenosis and report this case with review of lite rature.