Urinary Tract Infections Due to NontyphoidalSalmonella

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Abstract

Background

We sought to establish the characteristics of symptomatic nontyphoidal Salmonella (NTS) urinary tract infection (UTI) without concomitant gastroenteritis (GE) as a separate clinical entity.

Materials and Methods

We conducted a retrospective cohort single-center study and reviewed all cases of NTS bacteriuria between 1995 and 2016. Patients were assigned to a group according to their clinical presentation, namely, symptomatic NTS UTI without GE, GE with NTS bacteriuria or isolated asymptomatic NTS bacteriuria. We compared the characteristics of patients in the NTS UTI group to those of the latter 2 groups.

Results

NTS bacteriuria was found in 77 patients, of which 61 had records available for review. Twenty-one patients (including 17 adults) presented with NTS UTI, 30 patients presented with features of GE with NTS bacteriuria and 10 patients had asymptomatic NTS bacteriuria. NTS UTI was not significantly associated with older age, male sex, diabetes, immunosuppressive states or urologic abnormalities. There was a significant difference in the proportion of patients with an underlying urologic malignancy in the NTS UTI group (4 of 17 patients [23.5%]) as compared to those in the other groups (0 of 24 patients), P = 0.023.

Conclusions

A unique group of patients with symptomatic NTS UTI without GE was identified. A significant association with urologic malignancies was demonstrated in patients with NTS UTI compared to those with GE and NTS bacteriuria or asymptomatic NTS bacteriuria.

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