1/28. MRI of cerebral alveolar echinococcosis.Cerebral alveolar echinococcosis is rare. We report a case with multiple intracranial masses which show cauliflower-like contrast enhancement pattern on MRI. The lesions originated from hepatic involvement with invasion of the inferior vena cava.- - - - - - - - - - ranking = 1keywords = alveolar (Clic here for more details about this article) |
2/28. echinococcosis granulosus/cysticus of the tibia.Hydatid disease is caused by the parasitic tapeworm Echinococcus. There are three species: E. granulosus, E. alveolaris and E. voegeli. Only E. alveolaris and E. granulosus are important for human infections. These two species are totally divergent in their manner of infestation. Hydatid disease is a rare parasitic disease that primary involves the liver and the lung. Skeletal disease is rare, accounting for less than 2% of all hydatid lesions, and often presents as a clinical and radiologic diagnostic problem. The skeletal involvement is usually due to secondary extension after haematogenous spread of the infection. The vertebral column, the pelvis and the skull are most commonly involved. Treatment is also difficult because of the invasive nature of bony involvement and the spillage of fluid with subsequent contamination seeding. We present a case of primary hyatid cyst of the tibia. We point out the importance of considering osseous hydatidosis in the differential diagnosis of destructive bone lesions and the necessity of radical resection.- - - - - - - - - - ranking = 0.4keywords = alveolar (Clic here for more details about this article) |
3/28. Multiple hydatid cysts of the neck, the nasopharynx and the skull base revealing cervical vertebral hydatid disease.Hydatid disease is caused by the parasitic tapeworm Echinococcus. This parasite in larval stage can thrive in many parts of the body, most commonly in the liver and the lung. Hydatid disease in the head and neck is uncommon and hydatid cyst presents rarely as a cervical mass. Cervical vertebral echinococcosis is rare. We report a 14-year-old girl with multiple cervical spine hydatid cysts of the C1-C2 vertebrae that spread into the surrounding paravertebral tissues and involve the nasopharynx and the skull base particularly the left jugular foramen. This process has caused a progressive swelling in the left side of the neck located in the retrostyloid compartment of the parapharyngeal space with paralysis of cranial nerves (VI, IX, X, XI, XII). The diagnosis was made based on the image obtained from CT and MRI examinations. Characteristics of this rare disease, diagnosis and treatment difficulty are discussed.- - - - - - - - - - ranking = 7.7618879887643E-5keywords = process (Clic here for more details about this article) |
4/28. Report of diffusion-weighted MRI in two cases with different cerebral hydatid disease.PURPOSE: To present MRI findings in two cases of cerebral hydatid disease with an emphasis on diffusion-weighted imaging (DWI) findings of echinococcus granulosus (EG) versus Echinococcus alveolaris (EA). RESULTS: EG lesions were isointense with cerebrospinal fluid in all sequences including DWI. On DWI, EA lesions remained hypointense on b = 1000 s/mm2 diffusion-weighted images. Apparent diffusion coefficient (ADC) values of EG and EA lesions were completely different from each other, 2.88 /- 0.24 x 10(-3) s/mm2 and 1.33 /- 0.15 x 10(-3) s/mm2, respectively. CONCLUSION: The ADC values could not be used to discriminate from other differential diagnoses.- - - - - - - - - - ranking = 0.2keywords = alveolar (Clic here for more details about this article) |
5/28. Usefulness of PCR analysis for diagnosis of alveolar echinococcosis with unusual localizations: two case studies.The report presents two cases where diagnosis of alveolar echinococcosis was confirmed by echinococcus multilocularis and echinococcus granulosus PCR. The extrahepatic osseous involvement and the absence of initial hepatic involvement are unusual in both cases. Due to limitations of serological interpretation, PCR was useful to diagnose atypical echinococcosis.- - - - - - - - - - ranking = 1keywords = alveolar (Clic here for more details about this article) |
6/28. Hydatid cyst of the craniocervical junction: case report.OBJECTIVE AND IMPORTANCE: Although rare in developed countries, hydatid disease is a serious parasitic infection in endemic areas. Spinal disease most commonly involves the thoracic region, and involvement of the upper cervical spine is extremely rare. In this report, a case of hydatid disease involving the craniocervical junction is presented, along with a review of the literature. CLINICAL PRESENTATION: A 44-year-old man presented with the complaint of neck pain. The results of his physical and neurological examinations were within normal ranges, except for pain exacerbated by neck motion and spasm of the cervical musculature. magnetic resonance imaging demonstrated a cystic lesion involving the odontoid process and body of C1 and C2, with thin and regular cyst walls and cyst contents similar in intensity to that of cerebrospinal fluid. The results of serological tests performed with the suspected diagnosis of hydatid disease were positive. INTERVENTION: The patient initially underwent surgery to provide stabilization of the craniocervical junction, using autogenous bone graft and sublaminar wiring from the occiput to C3 via a posterior approach. The cyst was approached via a transoral route, using a U-shaped pharyngeal incision. There were no neurological deficits after surgery. Postoperative magnetic resonance imaging scans confirmed complete excision of the cyst, and the patient was discharged on the 12th postoperative day. He received six cycles of albendazole treatment, each consisting of 28 days with an intervening drug-free period of 2 weeks. magnetic resonance imaging scans performed 1 year after surgery revealed the patient was still disease-free. CONCLUSION: Hydatid disease should be considered in the differential diagnosis of spinal cord compression, especially in endemic areas. Although the chance of obtaining a cure is unlikely, radical surgery coupled with antihelminthic therapy seems to provide long-lasting relief.- - - - - - - - - - ranking = 7.7618879887643E-5keywords = process (Clic here for more details about this article) |
7/28. brain metastasis of alveolar echinococcosis in a hyperendemic focus of echinococcus multilocularis infection.An unusual female case, with alveolar echinococcosis (AE) disseminated from the primary hepatic lesion to the brain by metastasis formation, was retrospectively identified during a community survey in Ningxia Hui Autonomous Region, northwest china in 2003. Among possible metastases of hepatic AE, locations to the brain are rare and usually fatal; and they have especially been assigned to concomitant immune suppression. An enhancing role of pregnancy, which may be suspected in this case, the favourable outcome after surgery and chemotherapy, and also a mental disability in a child following long-term intrauterine exposure to mebendazole, make the report particularly unique.- - - - - - - - - - ranking = 1keywords = alveolar (Clic here for more details about this article) |
8/28. Cerebral alveolar echinoccosis mimicking primary brain tumor.We present a case of cerebral infestation by echinococcosis multilocularis mimicking an infiltrative primary brain tumor. A heavily calcified mass invading the midbrain enhanced in a cauliflower-like fashion with small peripheral nodules present on MR imaging. perfusion-weighted MR imaging revealed low relative cerebral blood volume within the calcified lesion and peripheral hyperemia. Single-voxel proton MR spectroscopy with an echo time of 135 milliseconds was normal.- - - - - - - - - - ranking = 0.8keywords = alveolar (Clic here for more details about this article) |
9/28. Cerebral alveolar hydatid cyst--case report.A rare case of cerebral alveolar hydatid disease in a 41-year-old female is presented. The larval mass was subtotally removed and the presence of alveolar hydatid cysts established histologically. Postoperatively, slight mental disturbance persisted but paresis did not develop.- - - - - - - - - - ranking = 1.2keywords = alveolar (Clic here for more details about this article) |
10/28. CT findings and surgical treatment of double intracranial echinococcal cysts.The authors present a young male patient with two intracranial lesions, one in the left occipital lobe, the other in the left temporal lobe. These masses were totally removed and both proved to be alveolar hydatid cysts. Surgery for a large hepatic mass, diagnosed after the first craniotomy, was refused by the patient.- - - - - - - - - - ranking = 0.2keywords = alveolar (Clic here for more details about this article) |
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