In patients with type II RCD, capsule endoscopy can detect additional cases with ulcerative jejunitis and could be included in the diagnostic armamentarium, subject to confirmation by larger series. In patients with type I RCD, our study confirmed the low diagnostic yield of imaging procedures, including wireless capsule endoscopy.

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SUMMARY:Hemolytic uremic syndrome is a multisystem disorder that is caused by infection with Shiga-toxin-producing Escherichia coli. HUS affects mainly children and is rare among adults. This retrospective case series analyzes clinical signs and MR imaging findings of 11 adult patients with HUS associated nervous system involvement during the epidemic EHEC outbreak in northern Europe with its epicenter in Hamburg in May 2011. The most prevalent imaging finding was symmetric pointy vasogenic edema of the brain stem in the acute and subacute phases of the disease (n ϭ 5). One patient exhibited additional symmetric mesiotemporal signal changes mimicking limbic encephalitis. Two patients developed subcortical patchy lesions, and 4 subjects did not present with any signal changes. Remarkably, territorial ischemia, signs of hemorrhage, or blood-brain barrier disruption have not been detected. While brain stem lesions were transient and normalized with clinical recovery, supratentorial lesions did not resolve completely at 2-month follow-up examination.ABBREVIATIONS: EHEC ϭ enterohemorrhagic Escherichia coli; HUS ϭ hemolytic uremic syndrome; PRES ϭ posterior reversible encephalopathy syndrome;

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This monocentric case series describes one of the so far largest published series of mostly young and female patients with EHEC and EHEC-HUS.