PMC5515099_01
(A) Direct view. Both parts of the guidewire protrude out of the urethra. (B) Fluoroscopy. Formed inverted "U" of the guidewire in the lower third of the ureter.
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However, unexpectedly, during the advancement of the wire, the proximal part of it came out through the external urethral orifice (Fig. 1A) and fluoroscopy revealed looping back of the shaft of the guidewire below the stone (Fig. 1B).
Endoscopic view: The guidewire has initially passed submucosally and returned intraluminally, entrapping the mucosa between both ends.
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The guidewire had perforated the mucosa of the ureter and was looping back through the lumen of the ureter (Fig. 2).
A superglide ureteral catheter is advanced through the guidewire.
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Teleflex) (Fig. 3). The guidewire was removed easily from the ureter through the ureteral catheter without any sequela.