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Background <p>The hippocampal formation is indispensable to convert short-term into long-term memories. It is a brain region particularly vulnerable to a variety of noxious stimuli. Severe hippocampal injury with complete inability to convert short-term into long-term memories is very rare in bacterial meningitis.</p> Case presentation <p>At the age of 62&#xa0;years, a white German female teacher acquired <i>Listeria monocytogenes</i> meningitis after the consumption of goat cheese manufactured from raw milk. Malabsorptive hydrocephalus required placement of a ventriculoperitoneal shunt. The further course became complicated by two shunt infections. Severe bilateral hippocampal atrophy developed. In spite of restoration of CSF drainage via a replacement shunt, the patient lost the capacity to form new memories. Conversely, her personality and the ability to work with previously stored information remained intact for many years.</p> Conclusions <p>Protection of the hippocampal formation and preservation of the capacity to form new memories is a major goal in the treatment of bacterial meningitis. Further improvement of outcome in bacterial meningitis will depend on approaches that effectively protect the hippocampal formation.</p>

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Bilateral functional hippocampectomy following recurrent bacterial meningitis: a case report

  • 期刊论文

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  • 发表日期：

    2026年4月7日

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  • Marija Djukic,
  • Jörg Larsen,
  • Hilmar Prange,
  • Veit Rohde,
  • Roland Nau

摘要

Background

The hippocampal formation is indispensable to convert short-term into long-term memories. It is a brain region particularly vulnerable to a variety of noxious stimuli. Severe hippocampal injury with complete inability to convert short-term into long-term memories is very rare in bacterial meningitis.

Case presentation

At the age of 62 years, a white German female teacher acquired Listeria monocytogenes meningitis after the consumption of goat cheese manufactured from raw milk. Malabsorptive hydrocephalus required placement of a ventriculoperitoneal shunt. The further course became complicated by two shunt infections. Severe bilateral hippocampal atrophy developed. In spite of restoration of CSF drainage via a replacement shunt, the patient lost the capacity to form new memories. Conversely, her personality and the ability to work with previously stored information remained intact for many years.

Conclusions

Protection of the hippocampal formation and preservation of the capacity to form new memories is a major goal in the treatment of bacterial meningitis. Further improvement of outcome in bacterial meningitis will depend on approaches that effectively protect the hippocampal formation.