نتایج جستجو برای: infratentorial
تعداد نتایج: 1168 فیلتر نتایج به سال:
Brain abscess is an extremely rare manifestation of tuberculous involvement of the CNS; meningitis and tuberculoma are much more common [1-6]. The CT appearance of tuberculous abscess cannot be distinguished from many other entities that can present as a ring-enhancing lesion, such as pyogenic abscess, primary or metastatic neoplasm, or resolving hematoma. However, given the appropriate history...
Medulloblastoma is a rare and aggressive tumor of the brain that usually occurs in children or young adults with a tendency to metastasize. The incidence in infant is rare. We came across one such child who presented with slight disorientation, vomiting, irritable personality and somewhat large size head. The clinical, radiological preoperative diagnosis was space occupying lesion in the poster...
Case presentation: Previously healthy adolescent, started at age 15 with limitation of abduction the right eye, spontaneous improvement after two months. A brain magnetic resonance imaging was performed, which showed multiple supratentorial and infratentorial demyelinating lesions, without gadolinium enhancement, prednisone 60 mg/day started. After 6 months, she admitted to service, due suppres...
A 24 year old woman presented with a sudden excruciating headache mimicking an acute vascular event. She had undergone a lung transplantation because of cystic fibrosis and was receiving maintenance treatment with tacrolimus and prednisone. Ancillary investigation excluded vascular causes. Magnetic resonance imaging demonstrated hyperintense lesions in the infratentorial and parieto-occipital r...
The MR and CT findings in 12 adolescents with multiple sclerosis were compared with reported findings in adults. The adolescent group showed a more striking female predominance, more severe disease characteristics, and more frequent infratentorial involvement. Cortical atrophy and abnormal iron accumulation in the basal ganglia were uncommon in the adolescents. Neither group demonstrated a corr...
Spinal metastasis, a devastating neurologic complication of intracranial glioblastomas is not as uncommon as initially thought. It varies from 25% in supratentorial glioblastomas to 60% in infratentorial glioblastomas. The underlying pathogenesis spinal spread of high-grade gliomas is still unclear. To date, no causal responsibility of Bevacizumab (BEV) was noted. Here, we report for the first ...
Subependymomas are rare benign tumors located in the ventricular system. Intraparenchymal subependymoma is extremely rare; only 6 cases have been reported, and all were located in the supratentorial region. We describe a case of infratentorial, intraparenchymal subependymoma in a 28-year-old man with intermittent headache. Imaging revealed a well-demarcated cystic and solid cerebellar mass near...
A retrospective study has been carried out on 67 patients with posterior fossa haemangioblastomata. Clinical details are presented, and the problems of diagnosis discussed. A fresh definition of the von Hippel-Lindau complex is put forward. The results of surgery are good for patients with solitary and sporadic tumours.
Approximately 50% of all childhood brain tumours arise in the infratentorial fossa and the most common tumours in this region of the brain are cerebellar astrocytomas, medulloblastomas, ependymomas, and brainstem gliomas [1]. Conversely in the suratentorial fossa, up to 20% of childhood tumours arise in the suprasellar region with craniopharyngiomas, visual pathway gliomas, and germinomas as th...
BACKGROUND It is unknown whether multiple system atrophy of the cerebellar type (MSA-C) and idiopathic cerebellar ataxia with extracerebellar presentation (IDCA-P) represent distinct entities. OBJECTIVE To investigate the discriminative validity of magnetic resonance imaging in sporadic cerebellar ataxia. DESIGN Basal ganglia and infratentorial structures were screened for signal abnormalit...
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