Cyst Growth and Spontaneous Cure in Hydatid Disease

Römig, Thomas; Zeyhle, E.; Macpherson, C. N. L.; Rees, Philip; Were, John

doi:10.1016/s0140-6736(86)90974-8

Cited by 85 publications

(56 citation statements)

References 2 publications

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“…For example, in the Turkana district of Kenya, a region of high endemicity where CE caused high morbidity, higher growth rates of cysts were recorded. In an ultrasonography study of 66 patients, about 30% of the abdominal cysts grew slowly (1 to 5 mm per year), 43% showed moderate expansion (6 to 15 mm per year), 11% exhibited a more rapid increase (average of 31 mm and maximum of 160 mm per year), and 16% of the cysts did not expand or had collapsed (169,172). The latter finding shows that spontaneous involution of cysts is possible, which leads to changes in the ultrasonographic appearance of the cysts (see below).…”

Section: Vol 17 2004 Biology and Epidemiology Of Echinococcosis 109mentioning

confidence: 99%

“…They have a wide geographic range in European countries but fox densities per square kilometer are highly variable. In larger regions of the area of endemicity, the average prevalences of E. multilocularis in foxes vary from approximately 1 to Ͼ60% (51,52,79,131,170,172). Information on parasite prevalences in foxes is available from several central European countries, but exact data on infection intensities are scarce.…”

Section: Epidemiologymentioning

confidence: 99%

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Biological, Epidemiological, and Clinical Aspects of Echinococcosis, a Zoonosis of Increasing Concern

2004

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Echinococcosis in humans is a zoonotic infection caused by larval stages (metacestodes) of cestode species of the genus Echinococcus. Cystic echinococcosis (CE) is caused by Echinococcus granulosus, alveolar echinococcosis (AE) is caused by E. multilocularis, and polycystic forms are caused by either E. vogeli or E. oligarthrus. In untreated cases, AE has a high mortality rate. Although control is essentially feasible, CE remains a considerable health problem in many regions of the northern and southern hemispheres. AE is restricted to the northern hemisphere regions of North America and Eurasia. Recent studies have shown that E. multilocularis, the causative agent of AE, is more widely distributed than previously thought. There are also some hints of an increasing significance of polycystic forms of the disease, which are restricted to Central and South America. Various aspects of human echinococcosis are discussed in this review, including data on the infectivity of genetic variants of E. granulosus to humans, the increasing invasion of cities in Europe and Japan by red foxes, the main definitive hosts of E. multilocularis, and the first demonstration of urban cycles of the parasite. Examples of emergence or reemergence of CE are presented, and the question of potential spreading of E. multilocularis is critically assessed. Furthermore, information is presented on new and improved tools for diagnosing the infection in final hosts (dogs, foxes, and cats) by coproantigen or DNA detection and the application of molecular techniques to epidemiological studies. In the clinical field, the available methods for diagnosing human CE and AE are described and the treatment options are summarized. The development of new chemotherapeutic options for all forms of human echinococcosis remains an urgent requirement. A new option for the control of E. granulosus in the intermediate host population (mainly sheep and cattle) is vaccination. Attempts are made to reduce the prevalence of E. multilocualaris in fox populations by regular baiting with an anthelmintic (praziquantel). Recent data have shown that this control option may be used in restricted areas, for example in cities, with the aim of reducing the infection risk for humans

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Section: Vol 17 2004 Biology and Epidemiology Of Echinococcosis 109mentioning

confidence: 99%

Section: Epidemiologymentioning

confidence: 99%

Biological, Epidemiological, and Clinical Aspects of Echinococcosis, a Zoonosis of Increasing Concern

2004

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“…13 cm per year, but usually much less) [9,10], depending on location, causative species and probably also patient's age [9,11,12]. In the present case, the cyst had presumably been growing for at least one year and eventually constricted the lower lobe, thus predisposing to a secondary pulmonary infection.…”

Section: Discussionmentioning

confidence: 56%

An autochthonous case of cystic echinococcosis in Finland, 2015

et al. 2015

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We report a case of pulmonary cystic echinococcosis in a child from eastern Finland with no history of travelling abroad. The cyst was surgically removed and the organism molecularly identified as Echinococcus canadensis genotype G10. This parasite is maintained in eastern Finland in a sylvatic life cycle involving wolves and moose; in the present case, the infection was presumably transmitted by hunting dogs.

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“…À Stable US appearance at follow-up: the appearance of an EC changes over time, as a result of treatment or as part of its natural history. The latter aspect has still not been fully investigated, and only a few accounts have been published [7]. NPCs can also evolve although the pattern of change is less predictable and it usually involves only an increase in size.…”

Section: Discussionmentioning

confidence: 99%

A simple sonographic scoring system combined with routine serology is useful in differentiating parasitic from non-parasitic cysts of the liver

Grisólia¹,

Troia²,

Mariani³

et al. 2009

Journal of Ultrasound

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KEYWORDSEchinococcosis; Cyst; Ultrasound.Abstract In the absence of a detached endocyst, unilocular echinococcal cysts of the liver may be difficult to distinguish from non-parasitic cysts. In an attempt to identify sonographic features that could help distinguish these two types of cysts, we retrospectively analyzed 64 cases of fluid-filled hepatic cysts whose parasitic nature was ultimately excluded. This experience allowed us to develop a simple scoring system that quantifies the likelihood that hepatic cysts are non-parasitic. Sonographic criteria, together with the results of standard serological testing for cystic echinococcosis, proved to be sufficiently specific to allow definitive diagnosis without resorting to further tests.Sommario In assenza di distacco dell'endocistio, le cisti epatiche da echinococco uniloculari, possono essere difficili da distinguere dalle cisti non parassitarie. Allo scopo di definire meglio le caratteristiche ecografiche che possano aiutare a distinguere questi due tipi di cisti, abbiamo esaminato retrospettivamente 64 casi di cisti epatiche a contenuto liquido, che si sono rivelate essere non parassitarie. Abbiamo quindi realizzato un sistema a punteggio in grado di predire la probabilità di una cisti di essere non parassitaria. In conclusione, i criteri ecografici associati ai i test sierologici per echinococcosi sono sufficientemente specifici per ottenere una diagnosi, senza ricorrere ad ulteriori indagini. ª

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Cyst Growth and Spontaneous Cure in Hydatid Disease

Cited by 85 publications

References 2 publications

Biological, Epidemiological, and Clinical Aspects of Echinococcosis, a Zoonosis of Increasing Concern

Biological, Epidemiological, and Clinical Aspects of Echinococcosis, a Zoonosis of Increasing Concern

An autochthonous case of cystic echinococcosis in Finland, 2015

A simple sonographic scoring system combined with routine serology is useful in differentiating parasitic from non-parasitic cysts of the liver

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