An Isolated Ureteropelvic Junction Injury Following a Low-impact Mechanical Fall

To describe the presentation of a rare isolated ureteropelvic junction injury resulting from a mechanical fall on ice.

A 71-year-old previously healthy man presented to the emergency department at the University of Massachusetts Medical School 3 hours following falling on ice with complaints of gross hematuria and flank pain. Patient records were accessed via the institution's electronic medical records system between March 22, 2018 and April 22, 2018.

Abdominal imaging revealed urinary extravasation without evidence of accompanying injury to surrounding structures, confirming an isolated left ureteropelvic junction injury.

Isolated ureteral injury following low-impact blunt abdominal trauma is exceedingly rare. Furthermore, this patient's presentation challenges the accepted conventions for both mechanism of injury and accompanying clinical factors in ureteral trauma.