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Difficulties in HAM/TSP diagnosis.

Carla Maria Sena Andrade Slater1, Luiz Claudio Pereira Ribeiro, Marzia Puccioni-Sohler

  • 1Neuroinfection Clinic, Hospital Universitário Gaffrée e Guinle (HUGG), Universidade Federal do Estado do Rio de Janeiro (UNIRIO), Rio de Janeiro RJ, Brazil. carla.msas@gmail.com

Arquivos De Neuro-Psiquiatria
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Summary
This summary is machine-generated.

The Brazilian criteria effectively diagnosed defined Human T-lymphotropic virus type 1-associated myelopathy (HAM/TSP), matching Osame's criterion. Both diagnostic methods need improved cerebrospinal fluid markers for probable HAM/TSP cases.

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Area of Science:

  • Neurology
  • Infectious Diseases
  • Clinical Diagnostics

Background:

  • The World Health Organization recommends Osame's criterion (1990) for diagnosing Human T-lymphotropic virus type 1-associated myelopathy (HAM/TSP).
  • A Brazilian criterion was developed in 2006 to diagnose HAM/TSP from its onset.

Purpose of the Study:

  • To evaluate the agreement between Osame's criterion and the Brazilian criterion for HAM/TSP diagnosis.
  • To assess the diagnostic efficacy of the Brazilian criteria compared to the established Osame's criteria.

Main Methods:

  • Clinical and laboratory findings of 35 patients diagnosed with HAM/TSP were analyzed.
  • Anti-HTLV-I antibodies were detected using ELISA, Western blot, and/or polymerase chain reaction.
  • Agreement between diagnostic criteria was calculated using Kappa statistics.

Main Results:

  • 100% concordance (Kappa=1) was observed for "defined" HAM/TSP cases between the two criteria.
  • Lower concordance was found in patients with a "probable" HAM/TSP diagnosis.

Conclusions:

  • The Brazilian criteria demonstrated equal effectiveness to Osame's criteria for diagnosing "defined" HAM/TSP.
  • Both diagnostic approaches require enhancement with more specific cerebrospinal fluid biomarkers for laboratory diagnosis of probable HAM/TSP cases.