Primary megaureter
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Primary megaureter Dr / Hytham Nafady
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Transcript of Primary megaureter
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Primary megaureter
Dr / Hytham Nafady
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Definition
• Congenital dilatation of the ureter above aperistaltic normal caliber juxta-vesical segment.
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Etiology
Unknown, but may be due to:
• Aganglionosis:
(analogous to esophageal achalasia or Hirschsprung disease).
• Muscle derangement with increased collagen fibers.
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C.P
• Asymptomatic.
• Complications:
1. Urinary stasis.
2. Urinary stones.
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Radiological findings
• Dilated ureter, tapering toward juxta-vesical normal caliber segment giving bird beak appearance.
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DD
Primary mega ureter Mechanical obstructionVesico-ureteric reflux
The renal collecting system is not dialted.
The dilated ureter is not tortuous.
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MRU