Infected obstructed kidney · Decision · D59
Pus at the orifice
Allow about two minutes for two rounds. This scenario is teaching content; the score supports revision and does not assess clinical competence.
The scenario
- Emergency retrograde stent for an obstructing ureteric stone in a febrile patient.
What you see
- The ureteric catheter enters the orifice.
- Thick pus drains from around it under pressure.

Teaching only · not for diagnosis or treatment decisions