[An old complication returns. Anuria caused by ureteral catheterization].

Anuria due to urinary tract obstruction remains a clinical challenge. Prior research has shown that tumor-induced ureteral blockage can lead to severe renal impairment. Management typically involves stent placement to restore urine flow. However, secondary anuria following stent insertion is rare and poorly understood. No prior work had resolved the mechanisms behind this complication. That uncertainty drove the need for case reporting and literature synthesis. Existing knowledge focuses on stent function and tumor-related obstructions. This paper's contribution lies in documenting a unique anuria event after stent placement. The case highlights the diagnostic and therapeutic dilemmas in managing complex ureteral obstructions.

This case report aims to describe an instance of secondary anuria following stent insertion. The specific problem involves a patient with tumor-induced ureteral obstruction. The motivation stems from the lack of prior documentation on this complication. The authors sought to clarify the sequence of events leading to anuria after stent placement. They also aimed to evaluate the effectiveness of a parallel catheter in diagnosing stent patency. The study's goal is to inform clinicians about potential stent-related complications. By reviewing the literature, the authors hope to expand understanding of this rare phenomenon. Their findings may help guide diagnostic and therapeutic approaches in similar clinical scenarios.

The study involved a single patient with secondary anuria following stent insertion. A double pigtail stent was placed to address tumor-induced ureteral obstruction. A second ureteral catheter was introduced in parallel to assess stent patency. The catheter was used to wash the stent and confirm its functionality. Diuretics were administered to stimulate urine production. The presence of both catheters allowed for simultaneous monitoring and intervention. The literature was reviewed to contextualize the case within existing clinical knowledge. The authors synthesized evidence to explain the sequence of events and outcomes.

The patient developed secondary anuria after stent insertion for tumor-induced obstruction. A parallel catheter confirmed stent patency through washing procedures. Diuresis was eventually achieved with diuretic administration. Both the stent and catheter remained in place during treatment. The patient's renal function improved following successful diuresis. The literature review revealed no prior reports of this specific complication. The case suggests that stent placement may not always resolve anuria in tumor-related obstructions. The findings highlight the importance of diagnostic catheter use in complex cases.

The authors propose that secondary anuria may occur despite stent placement in tumor-related obstructions. They suggest that a parallel catheter can help confirm stent patency in such cases. Diuretic administration may aid recovery when stent patency is confirmed. The case suggests that anuria may persist if stent function is compromised. The literature review supports the rarity of this complication. The findings imply that clinicians should consider alternative interventions when anuria persists. The authors conclude that this case adds to the limited understanding of stent-related anuria. They propose that further case reports may help refine management strategies.