Renal Calculus 4

hage_25a_n.jpg and hage_25b_n.jpg: Two IVUs within 1 to 2 days of a 8-year-old boy with abdominal colics and hematuria. hage_25a_n.jpg: In the first IVU there is a dilatation of the left pelvis visible without a visible ureter. hage_25b_n.jpg: In the second IVU the left ureter is visible across its whole length, and the pelvis dilatation is decreasing. hage_25a_n.jpg and hage_25b_n.jpg: The diagnosis is a single stone which initially led to an obstruction of the ureteropelvic junction and later moved downward, presently obstructing the ureter close to the ureteral orifice. The spontaneous passage of renal stones can be supported by analgetics, forced body movements, and increased diuresis by high fluid intake. The older the patients, the more frequently so-called idiopathic calcium oxalate stones are encountered which occur as single or multiple stones, and may play a role in the differential diagnosis of hematuria. At schoolage the clinical presentation becomes more and more similar to that of adults with abdominal colics and hematuria.