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Linear Amplification Mediated PCR &#8211; Localization of Genetic Elements and Characterization of Unknown Flanking DNA
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Pyrexia of unknown origin.

Cristina Fernandez1, Nick J Beeching2

  • 1Tropical and Infectious Disease Unit, Royal Liverpool University Hospital, Liverpool, UK nicholas.beeching@lstmed.ac.uk.

Clinical Medicine (London, England)
|April 8, 2018
PubMed
Summary
This summary is machine-generated.

Pyrexia of unknown origin (PUO) is a diagnostic challenge, with causes including infection, inflammation, and neoplasms. While advanced tests improve diagnosis, many cases remain undiagnosed but have a good prognosis.

Keywords:
diagnosisfeverfever of unknown originpyrexiapyrexia of unknown origin

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Area of Science:

  • Internal Medicine
  • Infectious Diseases
  • Clinical Diagnostics

Background:

  • Pyrexia of unknown origin (PUO) presents a persistent clinical challenge since its definition in 1961.
  • PUO is categorized into classical, nosocomial, neutropenic, and HIV-related subgroups, with a potential fifth group for the elderly.
  • The etiology of PUO is broadly classified into infective, inflammatory, neoplastic, and miscellaneous categories.

Purpose of the Study:

  • To review the diverse aetiologies of pyrexia of unknown origin (PUO).
  • To present a systematic clinical approach for the investigation and management of PUO.
  • To recommend second-line investigations for cases where the aetiology remains unclear.

Main Methods:

  • Review of existing literature on pyrexia of unknown origin (PUO).
  • Analysis of diagnostic strategies for different PUO subgroups.
  • Evaluation of advanced diagnostic tools like PET-CT and novel molecular/serological tests.

Main Results:

  • Despite advancements in diagnostic capabilities, up to 50% of PUO patients remain undiagnosed after thorough investigations.
  • The cohort of patients with undiagnosed PUO demonstrates a reassuringly good prognosis.
  • Established subgroups and etiological categories guide the investigative process.

Conclusions:

  • A systematic approach to PUO investigation and management is crucial for effective patient care.
  • Early integration of advanced imaging and molecular diagnostics can enhance diagnostic yield.
  • Undiagnosed PUO does not necessarily imply a poor outcome, highlighting the importance of continued monitoring and supportive care.