Urologic radiology
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Ureteral obstruction by intramural bullet, buckshot, or related missle following penetrating abdominal trauma is rare; a search of the literature revealed only 4 previously described cases [1-4]. A fifth case of a bullet migrating from the renal pelvis to the ureter has been reported at autopsy [5]. We present 2 new cases of delayed symptomatic ureteral obstruction ("bullet colic") after abdominal gunshot wounds.
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Although sonography is the procedure of choice in evaluating testicular masses in infants, x-ray examination can confirm the diagnosis of healed meconium peritonitis by showing scattered intra-abdominal as well as intrascrotal calcifications. Failure to include an abdominal radiograph early in the evaluation of 2 infants admitted with hard scrotal masses resulted in delayed diagnosis of healed meconium peritonitis. The clinical progression of meconium peritonitis involving the scrotum starts with soft hydroceles at birth and progresses, as the meconium calcifies, to hard "tumor-like" masses at age 4-5 weeks. This paper stresses the sonographic characteristics of meconium peritonitis in the scrotum and the need for confirming radiographs of the abdomen.
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Ureteral obstruction secondary to metastases from distant primary tumors may be studied by urography, pyelography, venography and lymphagiography. An added dimension to the study of this disease process is obtained by the use of sonography and computed tomography since these techniques are better able to demonstrate the extent of the disease in the retroperitoneum.