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- Medical treatment of an unusual cerebral hydatid disease | BMC Infectious Diseases | Full Text.
Definitive diagnosis is dependent upon indentification of the parasite or its body parts in the lesion. Plain skull radiographs may show evidence of increased intracranial pressure. In children, diastasis of the sutures, erosion of the sella and thinning of the bone overlying the lesion may be observed. Calcification of the cyst wall may occur but is not common.
Angiography is the procedure of choice where computerised tomography scanning is not available. Typical features are an avascular mass with stretching of normal vessels 8. Follow-up post operative CT scans show that re-expansion of the brain is gradual and extra-axial collection of fluid may remain for a long time. The previous cyst site may also completely disappear 7. Successful operative treatment depends upon complete removal of the unruptured cyst.
Attempts should therefore be made to remove the cyst in loto. If rupture of the cyst occurs, irrigation with hypertonic salin should be done 7 to destroy the organisms by osmotic dessication. Prognosis usually depends on location and size of the lesion, presence of single or multiple lesions and the presence of contamination.
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Fortunately cerebral lesion are usually single and accessible. Figure 1. Cerebral hydatidosis. Clinical case report with a review of pathogencsis.
Echinococcosis in Colombia — A Neglected Zoonosis?
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Tropical Neurology. Buenos Aires, Use the link below to share a full-text version of this article with your friends and colleagues. Learn more. Echinococcosis is a human disease caused by the larval form of Taenia echinococcus , which lives in the gut of the dog, wild canides and other carnivorous animals which represent the definitive hosts and involves as intermediate hosts both domestic and wild animals.
Humans become accidental intermediate hosts by ingesting Taenia eggs. The main species pathogenic for man are E granulosus causing cystic echinococcosis with worldwide distribution and endemic in sheep and cattle breeding countries, and E multilocularis causing alveolar echinococcosis, with preferential distribution in the northern hemisphere.
After ingestion of contaminated food, hexacanth embryos migrate by the portal system to liver and later lung, brain and other tissues. Symptoms are related to both cyst location and size. Spilling of cyst fluid due to trauma or surgery may trigger anaphylaxis as well as disseminated infection. Host reaction is minimal in the brain but a foreign giant cell reaction may develop. Hydatid antigens induce an immune reaction in the host which is helpful for the diagnosis.
Although the host develops an immunological protection from reinfection, the parasite evades host immune attack. A wide range of evasion mechanisms have been advanced, including a barrier for host cells due to hydatid cyst laminated cuticle, polyclonal activation of lymphocytes by parasite soluble antigens, and depression of host cell immune responses. Australas Radiol ; Intracranial hydatid cysts in children. Neurosurgery ;33 2 : Multiple Intracranial Hydatid cysts in a boy.
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Hydatidosis of the Central Nervous System: Diagnosis and Treatment
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Cardiac echinococcosis with negative serologies: a report of two cases. Heart lung circ ;18 1 Neurosurg Rev ;—37 Australas Radiol ;— Spinal cord hydatid cysts in Egypt. J Egypt Soc Parasitol ; — Spermatic cord hydatid cyst: an unusual localization. J Pediatr Surg ;42 12 :e Krajewski R, Stelmasiak Z. Cerebral hydatid cysts in children. Childs Nerv Syst ; Cerebral hydatid cysts: technique and pitfalls of surgical managemen.
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