Korean J Vet Res.  2018 Jun;58(2):107-109. 10.14405/kjvr.2018.58.2.107.

Ectopic migration of Dirofilaria immitis in a Eurasian otter (Lutra lutra) in Korea

Affiliations
  • 1Animal Disease Diagnostic Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea. choiej@korea.kr
  • 2Bacterial Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea.
  • 3Onnury Animal Clinic, Suncheon 57949, Korea.

Abstract

An 8-year-old female Eurasian otter (Lutra lutra) reared in a wetland center, died 2 h after sudden onset of astasia and dyspnea despite medical treatment. Gross examination of internal organs revealed 10 adult filarioid nematodes in the right ventricle of the heart and three between the left and right cerebral hemispheres. All nematodes were identified as Dirofilaria immitis by direct microscopy and polymerase chain reaction assay. Histopathological observation revealed multifocal hemorrhage in the cerebral subarachnoid space and focal necrosis with hemorrhagein the cerebellar parenchyma. Although rare, veterinarians should consider cerebral dirofilariasis as a differential diagnosis in unexplained neurological cases.

Keyword

Dirofilaria immitis; Eurasian otter; brain; ectopic migration

MeSH Terms

Adult
Animals
Brain
Cerebrum
Child
Diagnosis, Differential
Dirofilaria immitis*
Dirofilaria*
Dirofilariasis
Dyspnea
Female
Heart
Heart Ventricles
Hemorrhage
Humans
Korea*
Microscopy
Necrosis
Otters*
Polymerase Chain Reaction
Subarachnoid Space
Veterinarians
Wetlands
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