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Primary megaureter Dr / Hytham Nafady

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Page 1: Primary megaureter

Primary megaureter

Dr / Hytham Nafady

Page 2: Primary megaureter

Definition

• Congenital dilatation of the ureter above aperistaltic normal caliber juxta-vesical segment.

Page 3: Primary megaureter

Etiology

Unknown, but may be due to:

• Aganglionosis:

(analogous to esophageal achalasia or Hirschsprung disease).

• Muscle derangement with increased collagen fibers.

Page 4: Primary megaureter

C.P

• Asymptomatic.

• Complications:

1. Urinary stasis.

2. Urinary stones.

Page 5: Primary megaureter

Radiological findings

• Dilated ureter, tapering toward juxta-vesical normal caliber segment giving bird beak appearance.

Page 6: Primary megaureter

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


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