Cases reported "Dilatation, Pathologic"

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1/7. Ultrasonographic demonstration of a simple ureterocele and dilated ureter in an adult.

    A 54 year old man was found to have a simple ureterocele with a dilated ureter. ultrasonography demonstrated the ureterocele as an echo-free structure at the base of the bladder without involvement of the bladder wall. The course of the dilated ureter and its entrance into the bladder were clearly defined.
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2/7. Megacystis microcolon intestinal hypoperistalsis syndrome with bilateral duplicated systems.

    A 29-year-old multigravida woman presented for her second prenatal ultrasound evaluation at 30 weeks of gestation. The study showed a female fetus, bilateral duplicated systems with severe hydronephrosis in the upper pole moieties and a massively distended bladder. Initial interpretation suggested ectopic/obstructing bilateral ureteroceles. To evaluate these findings further, a prenatal magnetic resonance imaging scan was obtained, documenting the absence of ureteroceles. The presumptive diagnosis of megacystis microcolon intestinal hypoperistalsis syndrome was made. After birth, contrast enema confirmed the presence of microcolon. This appears to be the first reported case of megacystis microcolon intestinal hypoperistalsis syndrome with bilateral duplex systems evaluated with prenatal magnetic resonance imaging.
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3/7. female wide urethra masquerading as a urethral diverticulum in association with ectopic ureterocele.

    A rare case of wide urethra in a female infant mimicking as a urethral diverticulum in association with ectopic ureterocele is reported. The ureterocele terminated just below the bladder neck, but the diverticulum-like structure everted from the wide urethra, protruding towards the ureterocele. Weakness of the urethral wall, distal to the actual ureterocele may produce such an abnormal radiologic finding. The pertinent literature is reviewed.
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keywords = ureterocele
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4/7. Ectopic ureter and ureterocele: their varied sonographic manifestations.

    The sonographic examinations of four patients with simple ectopic ureters and 11 with ectopic ureteroceles were reviewed to determine distinguishing characteristics. Ectopic ureters, in cases of extreme dilatation and tortuosity, sometimes mimic multiseptated, cystic abdominal masses. However, the proximal portions of some severely dilated ureters are surprisingly small. Ectopic ureters sometimes indent the lower vesical wall, simulating a ureterocele. Ectopic ureteroceles are dynamic structures, changing in shape and size according to intravesical pressure. The lower pole of a duplex kidney may be difficult to detect because of displacement by the dilated upper renal pelvis and ureter. The renal parenchyma associated with an ectopic ureter may be equally difficult or impossible to find because of diminutive dysplasia or, less commonly, acquired atrophy. Dysplasia is characterized sonographically by highly echogenic parenchyma, lack of corticomedullary differentiation, and occasionally massive enlargement by cysts. Ectopic ureters and ureteroceles can be identified by fetal sonography.
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keywords = ureterocele
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5/7. Ultrasound diagnosis of ectopic ureterocele.

    Three children with ectopic ureteroceles were examined with ultrasound, intravenous urography and cystography. In all cases the ultrasound studies outlined the ectopic ureterocele within the fluid-filled bladder and in one case added additional information regarding the non-functional portion of the duplication and its ureter.
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6/7. Ultrasonic diagnosis of obstructed renal duplication and ureterocele.

    The diagnoses of complete obstruction in a duplicated renal collecting system and ureterocele can be made with a high degree of confidence by ultrasound. Two children presenting with abdominal masses were examined by gray scale ultrasonography which demonstrated large cystic masses dorsal to and displacing the lower pole of the kidney ventrally and laterally. In one patient the dilated ureter terminated in a ureterocele. ultrasonography is the appropriate imaging modality for this disease process, though it generally becomes the complementary study to excretory urography in the diagnosis of an obstructed duplicated system. The dilated pelvis and ureter can be imaged to ultrasonography even when their presence is only implied on an excretory urogram. Finally, the cystic nature of a ureterocele, as well as its relationship to the ureter and bladder, makes ultrasonography an ideal technic for evaluating this anomaly.
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keywords = ureterocele
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7/7. Pseudoureterocele: a uroradiologic entity.

    An analysis of 5 patients with an acquired dilatation of the distal ureter, simulating a simple ureterocele, is herein reported. Radiologically, pseudoureteroceles are more likely to be associated with ipsilateral upper tract obstruction and have asymmetric intravesical dilatation. The urologist should be aware of this urographic deformity, for the majority of pseudoureteroceles are related to malignancy involving or invading the bladder.
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ranking = 1.1666666666667
keywords = ureterocele
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