Equine cerebral hydatid disease is described in a 7-year-old, crossbred, female horse. Clinical signs were characterized by circling gait, pressing of head against fences or objects and motor incoordination. On gross examination of the brain the hemispheres were swollen, mainly the left one. On transversal sections, a 5cm X 7cm fluid-filled cyst was observed within the lateral ventricle of the ...

Background: Many intracranial lesions can induce psychotic symptoms. Arachonoid cyst is one of the suspicious etiologies. A possible link between arachnoid cyst and psychosis gives an interest to the pathogenesis of psychotic symptoms. Here, we present a case of schizophrenia with a large cerebellar arachnoid cyst. Case Presentation: Ms. Lu is a 31-year-old woman with schizophrenia for 7 years...

Chronic infections represent a continuous battle between the host's immune system and pathogen replication. Many protozoan parasites have evolved a cyst lifecycle stage that provides it with increased protection from environmental degradation as well as endogenous host mechanisms of attack. In the case of Toxoplasma gondii, these cysts are predominantly found in the immune protected brain makin...

Toxoplasma gondii infects up to one third of the world's population. A key to the success of T. gondii as a parasite is its ability to persist for the life of its host as bradyzoites within tissue cysts. The glycosylated cyst wall is the key structural feature that facilitates persistence and oral transmission of this parasite. Because most of the antibodies and reagents that recognize the cyst...

Hydatid disease is caused by Echinococcus granulosus and is endemic in many parts of the world, including Iran. This parasitic tapeworm can produce cysts in almost every organ of the body, with the liver and lung being the most frequently targeted organs. However, the cyst tends to appear in different and sometimes unusual body sites in various geographical areas of the world. This revi...

Neurocysticercosis is the most common parasitic infection of the central nervous system in humans. The adult pork tape worm, Taenia solium, resides in the lumen of the intestine, and the only structural element of an adult worm usually found within a tissue cyst in the brain or in muscle is a single invaginated scolex. We report a highly unusual, and perhaps unique, occurrence of neurocysticerc...

Cardiac involvement in hydatid cyst disease is uncommon, occurring in approximately 2% of hydatid cases. Two cases of cardiac hydatid cysts with negative serologic tests are reported herein. In Case 1, the patient underwent surgery to remove cysts from the liver and 10 years later presented with symptoms and signs of ischaemic heart disease. In Case 2, the patient first underwent surgery to rem...

Hydatid cyst disease (Echinococcosis) is a parasitic illness that is rarely located in the brain. Primary cerebral hydatid cyst disease is rarely seen. We report here rare two cases presenting with sixth cranial nerve palsy with increased intracranial pressure syndrome due to primary cerebral hydatid cyst. A 5-year-old female and a 13-year-old boy complained of headache, strabismus, nausea, and...

We report the case of a giant hypothalamic hamartoma with a large intracranial cyst in a neonate. On ultrasonography, the lesion presented as a lobulated, mass-like lesion with similar echogenicity to the adjacent brain parenchyma, located anterior to the underdeveloped and compressed left temporal lobe, and presenting as an intracranial cyst in the left cerebral convexity without definite inte...

Intracranial hydatid disease is a parasitic infection that affects children in endemic areas such as the Mediterranean, South America, and Australia. In non-endemic areas, it is rare and may pose a diagnostic dilemma. We review a boy who presented with a right cerebral cyst. All investigations were negative, and hydatid cyst was encountered upon intra-operative exploration. We review the availa...