A Calcified Taenia solium Granuloma Associated with Recurrent Perilesional Edema Causing Refractory Seizures: Histopathological Features

Winnie W. Ooi Department of Infectious Diseases, Lahey Clinic, Burlington, Massachusetts; Department of Neurology, Lahey Clinic, Burlington, Massachusetts; Department of Clinical Pathology, Lahey Clinic, Burlington, Massachusetts; Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland; Laboratory of Molecular Microbiology, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland; Laboratory of Parasitic Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland

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Subhashie Wijemanne Department of Infectious Diseases, Lahey Clinic, Burlington, Massachusetts; Department of Neurology, Lahey Clinic, Burlington, Massachusetts; Department of Clinical Pathology, Lahey Clinic, Burlington, Massachusetts; Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland; Laboratory of Molecular Microbiology, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland; Laboratory of Parasitic Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland

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Christine B. Thomas Department of Infectious Diseases, Lahey Clinic, Burlington, Massachusetts; Department of Neurology, Lahey Clinic, Burlington, Massachusetts; Department of Clinical Pathology, Lahey Clinic, Burlington, Massachusetts; Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland; Laboratory of Molecular Microbiology, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland; Laboratory of Parasitic Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland

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Martha Quezado Department of Infectious Diseases, Lahey Clinic, Burlington, Massachusetts; Department of Neurology, Lahey Clinic, Burlington, Massachusetts; Department of Clinical Pathology, Lahey Clinic, Burlington, Massachusetts; Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland; Laboratory of Molecular Microbiology, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland; Laboratory of Parasitic Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland

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Charles R. Brown Department of Infectious Diseases, Lahey Clinic, Burlington, Massachusetts; Department of Neurology, Lahey Clinic, Burlington, Massachusetts; Department of Clinical Pathology, Lahey Clinic, Burlington, Massachusetts; Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland; Laboratory of Molecular Microbiology, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland; Laboratory of Parasitic Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland

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Theodore E. Nash Department of Infectious Diseases, Lahey Clinic, Burlington, Massachusetts; Department of Neurology, Lahey Clinic, Burlington, Massachusetts; Department of Clinical Pathology, Lahey Clinic, Burlington, Massachusetts; Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland; Laboratory of Molecular Microbiology, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland; Laboratory of Parasitic Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland

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We describe the first detailed histological description of an excised calcified Taenia solium granuloma from a patient who developed recurrent seizures associated with perilesional edema surrounding a calcified cysticercus (PEC). The capsule, around a degenerated cysticercus, contained marked mononuclear infiltrates that extended to adjacent brain, which showed marked astrocytosis, microgliosis, and inflammatory perivascular infiltrates. The presence of large numbers of mononuclear cells supports an inflammatory cause of PEC. Immunosuppression or anti-inflammatory measures may be able to treat and prevent PEC and recurrent seizures.

Author Notes

*Address correspondence to Theodore E. Nash, Laboratory of Parasitic Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Building 4, Bethesda, MD 20892. E-mail: tnash@niaid.nih.gov

Financial support: Support for this study was received from the intramural National Institutes of Allergy and Infectious Diseases at the National Institutes of Health.

Authors' addresses: Winnie W. Ooi, Department of Infectious Diseases, Lahey Clinic, Burlington, MA, E-mail: Winnie.W.Ooi@lahey.org. Subhashie Wijemanne, Department of Neurology, Lahey Clinic, Burlington, MA. Christine B. Thomas, Department of Clinical Pathology, Lahey Clinic, Burlington, MA. Martha Quezado, Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD. Charles R. Brown, Laboratory of Molecular Microbiology, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD. Theodore E. Nash, Laboratory of Parasitic Diseases, National Institutes of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, E-mail: tnash@niaid.nih.gov.

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