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Case Report: Granulomatous Amebic Encephalitis due to Acanthamoeba spp. in an Immunocompetent Pediatric Patient.

ABSTRACT: Granulomatous amebic encephalitis (GAE) caused by Acanthamoeba is a rare infection with central nervous system (CNS) involvement usually with fatal consequences. Currently, information regarding GAE in children is scarce and is limited only to case reports and case series. A 13-year-old immunocompetent male patient with a 6-month history of progressive and intermittent headaches presented to our institution. One week before hospital admission, the patient showed signs of CNS involvement. Magnetic resonance imaging revealed multiple lesions with supra- and infratentorial cerebral abscesses. An empiric treatment with combined antibiotics was given, but the patient died after 20 days of hospital stay. A postmortem diagnosis confirmed GAE. Although it is a rare disease in pediatric patients, GAE should be considered in children with a chronic history of fever, headache, and vomiting with CNS involvement.

SUBMITTER: Aparicio DV

PROVIDER: S-EPMC8274766 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature

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Case Report: Granulomatous Amebic Encephalitis due to Acanthamoeba spp. in an Immunocompetent Pediatric Patient.

Aparicio Denisse Vaquera DV Bejarano José Iván Castillo JIC de Los Santos Abiel Mascareñas AM Ramírez-Cortinas Sergio S de la O Cavazos Manuel M

The American journal of tropical medicine and hygiene 20210510 1

Granulomatous amebic encephalitis (GAE) caused by Acanthamoeba is a rare infection with central nervous system (CNS) involvement usually with fatal consequences. Currently, information regarding GAE in children is scarce and is limited only to case reports and case series. A 13-year-old immunocompetent male patient with a 6-month history of progressive and intermittent headaches presented to our institution. One week before hospital admission, the patient showed signs of CNS involvement. Magneti ...[more]

PMID: 33970886

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Project description:BackgroundUntil today, classic human astroviruses have not been associated with central nervous system infections in immunocompetent patients.Case presentationA 16-month-old Caucasian girl presented with repetitive generalized seizures with a 4-day history of watery diarrhea, which had already gradually improved. Initially, the prolonged seizures ceased after systemic midazolam treatment and were thought to be fever associated. However, her mental status remained altered, and after seizure recurrence, she was transferred to our pediatric intensive care unit. Seizure control was achieved by a combination of high-dose levetiracetam and phenobarbital, but she remained unconscious. An electroencephalogram at this time revealed generalized high voltage theta activity. All laboratory analyses, including extended blood and cerebrospinal fluid analyses, and a brain magnetic resonance imaging were normal. On day 4, the child gradually became conscious, but was very agitated and not able to walk. Since an electroencephalogram at this time still revealed generalized high voltage theta activity, although she had not received sedative medications for 72 hours, she was diagnosed as having encephalopathy. At that time, results of diagnostic testing of the stool sample were positive for classic astrovirus infection, and we decided to analyze the initially obtained cerebrospinal fluid for astrovirus as well. Cerebrospinal fluid was also found positive for human astrovirus. Sequencing analysis revealed a classic astrovirus genotype 1 with exactly the same nucleotide sequence as in the feces. Clinically, the child gradually improved and was discharged on day 9.ConclusionsWhereas the new human astrovirus subtypes have been recently associated with central nervous system infection, this is the first case of encephalitis in an immunocompetent child due to classic human astrovirus. Considering that classic human astroviruses are the third most common etiological agents of viral gastroenteritis in children, we believe that human astroviruses as causative agents for central nervous system infections should be considered more often, especially in children and infants with preceding gastroenteritis.

Dataset Information

Case Report: Granulomatous Amebic Encephalitis due to Acanthamoeba spp. in an Immunocompetent Pediatric Patient.

Publications

Case Report: Granulomatous Amebic Encephalitis due to Acanthamoeba spp. in an Immunocompetent Pediatric Patient.

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