Toxoplasma gondii was isolated from brain or heart tissue from 15 southern sea otters (Enhydra lutris nereis) in cell cultures. These strains were used to infect mice that developed antibodies to T. gondii as detected in the modified direct agglutination test and had T. gondii tissue cysts in their brains at necropsy. Mouse brains containing tissue cysts from 4 of the strains were fed to 4 cats...

Hydatid cysts are most frequently localized within the liver and lungs, although they can also be found in highly vascularized tissues such as the brain, muscle, heart, pancreas, adrenal, and thyroid glands.A 65-year-old female patient was admitted to our clinic with complaints of a progressively growing mass that was compressing the surrounding tissues and causing respiratory distress. The pat...

A 43-year-old man who had been treated for a craniopharyngioma with surgery and radiotherapy (33 years ago) was referred for evaluation of a sudden hemiparesis. Neuroimaging documented a brainstem cavernoma associated with basal ganglia calcifications and white matter hyperintensity near anterior temporal lobe cysts (Figures 1 and 2). Late brain abnormalities are often observed after radiothera...

The role of Diffusion Weighted Magnetic Resonance Imaging in the evaluation of various intracranial lesions has been evolving and increasing since its initial introduction as newer uses are being explored constantly. We review the imaging features of 68 cases of intracranial tumors and evaluate the role of diffusion weighted imaging in their diagnosis. Diffusion weighted imaging provides additi...

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...

Colloid cysts of the third ventricle are rare benign lesions. We report here an exceptional familial case defined by the evidence of two colloid cysts in two relatives of the first degree, a mother and her daughter in our description. Only 15 cases are reported in the literature. The main differences compared with sporadic cases are an earlier age of discovery and a female predominance. In case...

A 21-year-old woman, without significant medical history, acutely developed a left hemiparesis with left hypoesthesia. Three days earlier she had complained of itching with nettle rash, headache, and fever (38°C). A noncontrast computed tomographic (CT) scan (Fig 1A) revealed a right MCA infarct. Cerebral angiography showed an abrupt cutoff of the right proximal Ml segment, which was compatible...

objective: oral lesions are among the important reasons for seeking dental care. being frequently encountered, giant cell lesions form an important group of oral lesions. the epidemiologic data on these lesions, however, is scarce in iran. the present study investigated epidemiological and demographic characteristics of giant cell lesions in oral biopsies done in one of the largest oral patholo...

Carriers of the pork tapeworm, Taenia solium, are the sole source of cysticercosis, a parasitic tissue infection. When tapeworm eggs excreted by the carrier are ingested, tapeworm larvae can form cysts. When cysts form in the brain, the condition is called neurocysticercosis and can be especially severe. In Los Angeles County an average of 136 county residents are hospitalized with neurocystice...

Hydatid disease is common in the developing countries of South Asia. The rate varies from 10-15 out of every 500 intracranial lesions. Primary hydatid disease of the brain is a rare entity. Most cases of cerebral hydatidosis are associated with disease in the liver, lungs or other organs. The number of cysts is variable, but may range from one to ten. We report a case of primary cerebral hydati...