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Published on: October 12, 2017
[Urinary tract infection due to Streptococcus pneumoniae and its relationship with nephrourological malformations]
Milena Rivero Segura1, Maximiliano Ferraris1, Natalia Luján Robledo1
1Unidad de Nefrología, Hospital General de Niños Pedro de Elizalde, Ciudad Autónoma de Buenos Aires, Argentina.
Insights
Urinary tract infections (UTIs) in children caused by Streptococcus pneumoniae are rare but often linked to underlying renal or urological issues. Prompt urinary tract imaging is recommended for these atypical pediatric UTIs.
Area of Science:
- Pediatric Infectious Diseases
- Urology
- Microbiology
Background:
- Urinary tract infections (UTIs) are common in children, typically caused by enterobacteria.
- Streptococcus pneumoniae is an infrequent cause of pediatric UTIs.
Purpose of the Study:
- To present a case of pediatric UTI caused by Streptococcus pneumoniae.
- To review literature and discuss the necessity of urinary tract imaging in such cases.
Main Methods:
- A case report of a 2-year-old girl with recurrent febrile UTI due to Streptococcus pneumoniae.
- Literature review of 16 additional cases of pediatric UTIs caused by Streptococcus pneumoniae.
- Diagnostic imaging including voiding cystourethrogram and renal scintigraphy.
Main Results:
- The patient had a history of megaureter, left hydronephrosis, and grade V vesicoureteral reflux.
- Renal scintigraphy indicated severe left kidney functional compromise.
- Of the 17 total cases reviewed, 70% (12 cases) had associated renal-urological abnormalities.
Conclusions:
- Pediatric UTIs caused by Streptococcus pneumoniae are often associated with significant renal-urological alterations.
- Urinary tract imaging studies are crucial for identifying these underlying conditions in children with atypical UTIs.
Abstract:
Urinary tract infections (UTIs) are one of the most frequent bacterial conditions in children, being enterobacteria the predominant etiologic agents. Streptococcus pneumoniae is an exceptional cause of UTI in the pediatric population.
Objective:
To report the case of a UTI caused by Streptococcus pneumoniae, and to discuss the need for urinary tract imaging studies based on a literature review.
Clinical Case:
A 2-year-old girl with megaureter and left hydronephrosis diagnosed in the context of a recurrent UTI, with poor adherence to prophylactic treatment, was hospitalized due to a new episode of febrile UTI without response to outpatient treatment with a broad-spectrum antibiotic. Streptococcus pneumoniae was isolated in the urine culture. She received parenteral therapy with ceftriaxone with good clinical course and, due to UTI caused by an atypical germ added to her history of renal malformation, prophylaxis was reinitiated and imaging studies were completed. Voiding cystourethrogram showed left grade V vesicoureteral reflux. Renal scintigraphy showed severe functional compromise of the left kidney, thus, surgical indication was considered. This case, along with 16 additional cases identified in a literature review, revealed that 12 of them (70%) showed concomitant renal-urological conditions.
Conclusion:
UTIs caused by Streptococcus pneumoniae are frequently associated with renal-urological alterations, which suggest the need to study the urinary tract in these patients.
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