Recurrent Multiple Renal Calculi with Hydronephrosis Presenting 18 Years After Prior Stone Surgery: A Case Report

Technical Summary: Recurrent Multiple Renal Calculi with Hydronephrosis Presenting 18 Years After Prior Stone Surgery

Problem Statement
Urolithiasis is a prevalent global urological disorder characterized by a high tendency for recurrence. While recurrence rates are well-documented within the first decade (approximately 52% at 10 years), cases presenting with a recurrence interval of nearly two decades are uncommon. Furthermore, the clinical management of complex, infected, and obstructing renal calculi (such as staghorn or multiple stones) in resource-constrained settings presents a challenge. Current guidelines favor minimally invasive techniques like Percutaneous Nephrolithotomy (PCNL) or Retrograde Intrarenal Surgery (RIRS); however, these require specialized equipment and expertise often unavailable in low- and middle-income teaching hospitals. This case reports the clinical presentation of a patient with recurrent multiple renal calculi and gross hydronephrosis 18 years after initial surgery, and describes the management of this complex, infected, obstructing stone disease with open surgical intervention in a setting where endourological alternatives were not feasible.

Methodology
This study is a single-case report detailing the clinical course of a 47-year-old female patient admitted with right flank pain, fever, and dysuria.

• Diagnostic Workup: The patient underwent comprehensive evaluation including laboratory studies (noting elevated ESR and mild anemia), chest radiography, ECG, ultrasonography, and Intravenous Urography (IVU). Imaging confirmed multiple large calculi in the right renal pelvis and lower calyx, accompanied by gross hydronephrosis and delayed excretory function, indicative of infected obstructive uropathy.
• Surgical Intervention: Following optimization, the patient underwent an open right nephrolithotomy and pyelolithotomy via a rib-cutting (flank) incision. The procedure involved the extraction of multiple calculi from the renal pelvis and lower calyx. A double-J (DJ) ureteric stent was placed to ensure post-operative drainage.
• Post-operative Management: The patient was managed with symptomatic care, kept nil-by-mouth for six hours, and monitored for complications. Long-term metabolic workup and stone composition analysis were not performed due to resource limitations.

Key Results

• Clinical Outcome: The patient achieved an uneventful recovery with stable vital signs and no surgical or medical complications. The flank incision healed without infection.
• Operative Success: The open procedure successfully cleared the stone burden and relieved the obstruction in a single stage.
• Recovery Metrics: The patient was discharged on the third post-operative day.
• Clinical Presentation: The case highlighted a rare 18-year disease-free interval following prior stone surgery, contrasting with typical recurrence patterns where infection-related stones often recur within months. The presentation involved gross hydronephrosis and signs of systemic infection (fever, chills, rigors, elevated ESR), consistent with infected obstructive uropathy.

Key Contributions

• Documentation of Long-Term Recurrence: The report documents a case of nephrolithiasis recurring after an unusually long symptom-free interval (18 years), challenging the assumption that a long gap implies a resolved condition. It underscores the necessity of long-term vigilance even after successful initial treatment.
• Description of Open Surgery in Resource-Limited Settings: The paper describes a successful outcome using open nephrolithotomy and pyelolithotomy for complex, infected, and obstructing stone disease in a setting where PCNL or RIRS were unavailable. It references comparative Indian series suggesting that in high-volume, resource-constrained environments, open surgery can achieve comparable stone clearance with shorter operative times and lower overall costs compared to staged endourological pathways, though the author explicitly notes that such cost data are institution-specific and should be verified locally rather than generalized.
• Management of Infected Obstruction: The case illustrates a successful single-stage definitive clearance of infected, obstructing stones with stent placement, avoiding the need for pre-operative staged decompression (e.g., nephrostomy) in a patient who was not in immediate septic shock, though the author notes this requires careful clinical judgment.

Significance and Claims
The author asserts that this case serves as a reminder that the risk of urolithiasis recurrence never fully disappears, regardless of the time elapsed since the last episode. The primary significance lies in the description of open surgical techniques for complex stone disease in teaching hospitals within developing nations where advanced endourology is not accessible. The paper suggests that while minimally invasive techniques are preferred globally, open nephrolithotomy/pyelolithotomy may be a viable, safe, and cost-appropriate strategy for infected, obstructing stone disease in specific resource-constrained contexts, as evidenced by this patient's uncomplicated recovery and rapid discharge. The author modestly notes that the lack of stone composition analysis and long-term metabolic follow-up limits the ability to definitively explain the etiology of the recurrence or the specific stone type (e.g., struvite vs. calcium oxalate), and that the findings reflect one patient's course rather than a generalizable recommendation.