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Neurocysticercosis: Five new things.

Arturo Carpio1, Agnès Fleury, W Allen Hauser

  • 1Research Department (AC), University of Cuenca, Cuenca, Ecuador; G.H. Sergievsky Center (AC, WAH), Faculty of Medicine, Columbia University, New York, NY; and Instituto de Investigaciones Biomédicas (AF), UNAM Instituto Nacional de Neurologia y Neurocirugía, SS, Mexico City, Mexico.

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Neurocysticercosis, a common parasitic brain infection, presents varied symptoms due to parasite factors and brain inflammation. Diagnosis relies on neuroimaging, with antihelminthic drugs effective in only a third of parenchymal cases.

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Area of Science:

  • Neurology
  • Infectious Diseases
  • Parasitology

Background:

  • Neurocysticercosis is the leading parasitic brain disease globally.
  • Clinical presentation varies based on parasite location, number, stage, host factors, and brain inflammation.
  • Inflammation is a key driver of neurocysticercosis symptoms.

Purpose of the Study:

  • To review the clinical heterogeneity, diagnosis, and treatment of neurocysticercosis.
  • To highlight the role of neuroimaging and immunologic testing in diagnosis.
  • To assess the efficacy of current antihelminthic drug treatments.

Main Methods:

  • Review of neuroimaging techniques for cyst detection.
  • Discussion of immunologic testing utility.
  • Analysis of antihelminthic drug effectiveness for viable parenchymal cysts.

Main Results:

  • Seizures are the most common symptom in parenchymal neurocysticercosis, but typically do not lead to epilepsy.
  • Advanced imaging improves detection of cysts, including in extraparenchymal spaces.
  • Antihelminthic drugs are effective in approximately 33% of patients with viable parenchymal cysts.

Conclusions:

  • Neurocysticercosis management requires considering parasite and host factors.
  • Neuroimaging is crucial for diagnosis, complemented by immunologic tests when needed.
  • Current drug therapies have limited efficacy for a significant portion of patients with parenchymal neurocysticercosis.