Cerebral Cysticercosis in a Woodchuck (Marmota monax)

Bröjer, Caroline; Peregrine, Andrew S.; Barker, Ian K.; Carreno, Ramon A.; Post, Christina

doi:10.7589/0090-3558-38.3.621

Cited by 13 publications

(7 citation statements)

References 10 publications

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“…Considering the presence of protoscoleces, in the herein presented case, the examined cysticerci were probably infective for a definitive host. The finding of fertile metacestodes is in accordance with former reports of Cysticercus longicollis in other animal species and humans (Dyer and Greve, 1998; Bröjer et al, 2002; Wünschmann et al, 2003; Aghamohammadi et al, 2008; Ntoukas et al, 2013). The number of Taenia crassiceps cysticercosis in animals and humans in Europe is growing, probably as a result of environmental contamination by parasite eggs distributed through the dense population of (also urban) red foxes (Hofmannova et al, 2018).…”

Section: Resultssupporting

confidence: 92%

First report of pulmonary cysticercosis caused by Taenia crassiceps in a Cape fur seal (Arctocephalus pusillus)

Delling

Böttcher

Schiffbauer

et al. 2019

International Journal for Parasitology: Parasites and Wildlife

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The cestode Taenia crassiceps parasitizes in the intestine of domestic and wild carnivores, especially in red foxes. Usually, the metacestode stage, also known as Cysticercus longicollis, is located in muscles, peritoneal and pleural cavity of wild rodents. In this case, larval stages were found in a female Cape fur seal, which lived in a German zoo since June 1998. In January 2019, the animal presented clinical signs in terms of inappetence and reduced mobility and, within a short time, it developed dyspnoea and died. Pathological and parasitological examinations were performed. In a large mass of the right thoracic wall and in nodular lung lesions, metacestodes with numerous protoscoleces were identified. Morphological and molecular analyses led to the diagnosis of a Taenia crassiceps infection. Probably, the urban fox population was the source of infection. Thus, regarding the zoonotic potential of this cestode, a regularly performed parasitological examination of pet dogs is recommended.

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Section: Resultssupporting

confidence: 92%

First report of pulmonary cysticercosis caused by Taenia crassiceps in a Cape fur seal (Arctocephalus pusillus)

Delling

Böttcher

Schiffbauer

et al. 2019

International Journal for Parasitology: Parasites and Wildlife

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“…. In natural infections, T. crassiceps cysticerci are generally found in the subcutaneous tissues of wild rodents (Freeman, 1962); other sites, such as the peritoneal and pleural cavities, have been reported by Freeman et al (1973) and others (Albert et al, 1972;Rietschel, 1981;Delvalle, 1989;Anderson et al, 1990;Pétavy et al, 1996;Brö-jer et al, 2002;Wunschmann et al, 2003;Everhart et al, 2004).…”

mentioning

confidence: 84%

Evagination and Infectivity of Taenia crassiceps Cysticerci in Experimental Animals

Zurabián

Aguilar

Jiménez

et al. 2008

Journal of Parasitology

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Cysticerci of Taenia crassiceps reproduce asexually by exogenous budding in the rodent intermediate host, and can experimentally develop to the adult stage within the small intestine of golden hamsters. In the present study, we report the loss of cysticercus infectivity for hamsters after maintaining the strain for 4 yr by consecutive peritoneal passage in mice. Larval infectivity was restored after a cysticercus from the WFU strain developed into a gravid tapeworm after being passaged through a dog. The eggs of this tapeworm were infective for mice, which subsequently developed cysticerci with renewed capability for infecting experimental hamsters. An in vitro evagination assay was also conducted using eleventh-generation WFU strain cysticerci, as well as second- and fourth-generation dog-derived cysticerci. Significantly higher (P < 0.0001) evagination was observed for 5-mo-old dog-derived and WFU infrapopulations when compared with respective evagination values for 9- and 12-mo-old infrapopulations. The extent of evagination was linked to the capacity of cysticerci to infect hamsters, so that greater evagination resulted in a higher infectivity for hamsters and vice versa.

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“…24 For the dog in case 2, an additional consideration was that it resided in a geographical region in Ontario where neurocysticercosis caused by Taenia crassiceps had been reported in a woodchuck. 25 Neurocysticercosis had been previously diagnosed in a dog using MRI. 26 As a result, neurocysticercosis due to this parasite was tenta-…”

Section: Discussionmentioning

confidence: 99%

Clinical and MRI Findings in Three Dogs with Polycystic Meningiomas

James

Costa

Fauber

et al. 2012

Journal of the American Animal Hospital Association

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One spayed female Labrador retriever and two castrated male golden retrievers were evaluated for chronic (i.e., ranging from 3 wk to 24 wk) neurologic signs localizable to the prosencephalon. Signs included seizures, circling, and behavior changes. MRI demonstrated extra-axial, contrast-enhancing, multiloculated, fluid-filled, cyst-like lesions with a mass effect, causing compression and displacement of brain parenchyma. Differential diagnoses included cystic neoplasm, abscess or other infectious cyst (e.g., alveolar hydatid cyst), or fluid-filled anomaly (e.g., arachnoid cyst). The cyst-like lesions were attached to the rostral falx cerebri in all cases. In addition, case 2 had a second polycystic mass at the caudal diencephalon. Surgical biopsy (case 3 with a single, rostral tumor via transfrontal craniectomy) and postmortem histology (in cases 1 and 2) confirmed polycystic meningiomas. Tumor types were transitional (cases 1 and 3) and fibrous (case 2), with positive immunohistochemical staining for vimentin. Case 3 was also positive for E-cadherin, s100, and CD34. In all cases, staining was predominantly negative for glial fibrillary acid protein and pancytokeratins, supporting a diagnosis of meningioma. This report describes the first cases of polycystic meningiomas in dogs. Polycystic meningiomas are a rare, but important, addition to the differential diagnoses for intracranial cyst-like lesions, significantly affecting planning for surgical resection and other therapeutic interventions.

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Cerebral Cysticercosis in a Woodchuck (Marmota monax)

Cited by 13 publications

References 10 publications

First report of pulmonary cysticercosis caused by Taenia crassiceps in a Cape fur seal (Arctocephalus pusillus)

First report of pulmonary cysticercosis caused by Taenia crassiceps in a Cape fur seal (Arctocephalus pusillus)

Evagination and Infectivity of Taenia crassiceps Cysticerci in Experimental Animals

Clinical and MRI Findings in Three Dogs with Polycystic Meningiomas

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