Coenurus Infestation of Eye and Orbit

Manschot, W. A.

doi:10.1001/archopht.1976.03910030485010

Cited by 23 publications

(9 citation statements)

References 6 publications

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“…Subconjunctival localization may also occur after accidental direct inoculation with infective eggs. The onset of inflammatory responses result in a red and painful eye, followed by development of glaucoma, retinal fibrosis, and ultimately blindness as the final result of the infection [96,97]. Surgical removal of accessible cysts (Figure 6).…”

Section: The Most Commonly Reported Hiementioning

confidence: 99%

Zoonotic helminths affecting the human eye

2011

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Nowaday, zoonoses are an important cause of human parasitic diseases worldwide and a major threat to the socio-economic development, mainly in developing countries. Importantly, zoonotic helminths that affect human eyes (HIE) may cause blindness with severe socio-economic consequences to human communities. These infections include nematodes, cestodes and trematodes, which may be transmitted by vectors (dirofilariasis, onchocerciasis, thelaziasis), food consumption (sparganosis, trichinellosis) and those acquired indirectly from the environment (ascariasis, echinococcosis, fascioliasis). Adult and/or larval stages of HIE may localize into human ocular tissues externally (i.e., lachrymal glands, eyelids, conjunctival sacs) or into the ocular globe (i.e., intravitreous retina, anterior and or posterior chamber) causing symptoms due to the parasitic localization in the eyes or to the immune reaction they elicit in the host. Unfortunately, data on HIE are scant and mostly limited to case reports from different countries. The biology and epidemiology of the most frequently reported HIE are discussed as well as clinical description of the diseases, diagnostic considerations and video clips on their presentation and surgical treatment.Homines amplius oculis, quam auribus creduntSeneca Ep 6,5Men believe their eyes more than their ears

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Section: The Most Commonly Reported Hiementioning

confidence: 99%

Zoonotic helminths affecting the human eye

2011

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“…Therefore, differential considerations were based on published orbital diseases of other species. Exophthalmos with deviation of the globe secondary to a fluctuant mass was most consistent with an orbital cyst of parasitic, 4–12 zygomatic salivary gland, 13–20 third eyelid, 21,22 lacrimal, or Harderian gland 22–25 origin. Other considerations for exophthalmos included orbital neoplasia (primary, extension from nearby structures, metastatic), 26–30 orbital infection or inflammation (tooth root abscess, 31 abscess/cellulitis, 32–34 granuloma, 35 sinusitis, 36 zygomatic sialoadenitis, 37 foreign body reaction, 38,39 parasite migration), 40–42 orbital bone lesions (craniomandibular osteopathy, 20 craniofacial deformity, 24 osteomyelitis), 43,44 vascular anomalies (arteriovenous fistula, 45 orbital varix), 46 congenital abnormality (orbital dermoid) 47 and trauma, 20 (orbital emphysema, 48 fracture, and retrobulbar hemorrhage) 20,49 .…”

Section: Case Reportmentioning

confidence: 81%

“…Taenia have been identified in rabbits, 4,5,79–82 sheep, 83 cats, 78,84,85 humans, 10,72,86,87 a ring‐tailed possum, 88 a kangaroo 89 and, following experimental infection, in a chinchilla 90 . The life cycle of T. serialis involves dogs as definitive hosts and rabbits as intermediate hosts 78,82 .…”

Section: Discussionmentioning

confidence: 99%

Taeniacoenurus in the orbit of a chinchilla

Holmberg¹,

Hollingsworth²,

Osofsky³

et al. 2006

Veterinary Ophthalmology

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A 4-year old, male intact, captive-bred chinchilla (Chinchilla lanigera) was presented due to progressive exophthalmos of the right eye over a 5-month period. Ophthalmic examination revealed exophthalmos with dorsal displacement of the right globe. Retropulsion was decreased and a fluctuant, subcutaneous mass could be palpated posterior and dorsal to the central aspect of the zygomatic bone. Transdermal ultrasonography revealed a fluid-filled mass consistent with a cyst located within the ventral right orbit. Computed tomography demonstrated dorsal displacement of the globe, lateral displacement of the zygomatic arch, and numerous mineral-dense foci within the lumen of the cyst. The cyst was removed en bloc by ventral transpalpebral orbitotomy. Histopathology revealed a single capsulated cyst with multiple invaginated protoscolices, characterized by a prominent scolex with refractile hooklets, suckers, and abundant calcareous corpuscles consistent with a Taenia coenurus. Exophthalmos resolved with surgical therapy and there was no evidence of recurrence or postoperative complications over a period of 2 years. To the authors' knowledge, this is the first reported case of an orbital cyst of parasitic origin in a chinchilla.

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“…The ingested eggs release oncospheres in the host intestine that penetrate the intestinal wall and migrate toward target organs through the bloodstream, usually lodging in the brain, the spinal cord, and the eye. 5,8,9 In the brain, coenurii tend to invade the parenchyma or spread along CSF pathways, eventually causing basal arachnoiditis or ependymitis. 10 The most common signs and symptoms of coenurus infection are headache, vomiting, and papilledema, all caused by increased ICP from the mass effect of the cystic lesion.…”

Section: Discussionmentioning

confidence: 99%

Huge hemispheric intraparenchymal cyst caused byTaenia multicepsin a child

Benifla¹,

Barrelly²,

Shelef³

et al. 2007

Journal of Neurosurgery: Pediatrics

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The authors report an unusual case of a huge intraparenchymal cyst in a 4-year-old girl caused by Taenia multiceps infection. After surgical removal of the cyst, the child recovered completely. Brain infestation by coenurus is a rare disease, mainly reported in Africa, with a few case reports from patients in developed countries. Humans, especially young children, become intermediate hosts by ingesting eggs passed in the excrement of a definitive host, usually carnivores. In such cases, high mortality and morbidity rates have been reported. These rates decreased after the introduction of the modem neuroradiological techniques of computed tomography and magnetic resonance imaging.

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Coenurus Infestation of Eye and Orbit

Cited by 23 publications

References 6 publications

Zoonotic helminths affecting the human eye

Zoonotic helminths affecting the human eye

Taeniacoenurus in the orbit of a chinchilla

Huge hemispheric intraparenchymal cyst caused byTaenia multicepsin a child

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