منابع مشابه
Symptomatic tonsillar ectopia.
OBJECTIVE To determine if slight descent of the cerebellar tonsils (< 5 mm below the foramen magnum; tonsillar ectopia) may cause surgically treatable symptomatology. METHODS A consecutive series of nine symptomatic patients with tonsillar ectopia seen between December 1990 and March 1993 are reported on. The same number of age and sex matched controls were selected at random from outpatients...
متن کاملA case-control study of cerebellar tonsillar ectopia (Chiari) and head/neck trauma (whiplash).
PRIMARY OBJECTIVE Chiari malformation is defined as herniation of the cerebellar tonsils through the foramen magnum, also known as cerebellar tonsillar ectopia (CTE). CTE may become symptomatic following whiplash trauma. The purpose of the present study was to assess the frequency of CTE in traumatic vs non-traumatic populations. STUDY DESIGN Case-control. METHODS AND PROCEDURES Cervical MR...
متن کاملIncidence of cerebellar tonsillar ectopia in idiopathic intracranial hypertension: a mimic of the Chiari I malformation.
BACKGROUND AND PURPOSE IIH is a syndrome of elevated intracranial pressure without hydrocephalus, mass, or identifiable cause. Diagnosis is made by clinical presentation, intracranial pressure measurement, and supportive imaging findings. A subset of patients with IIH may have tonsillar ectopia, meeting the criteria for Chiari malformation type I but not responding to surgical decompression for...
متن کاملBilateral retrocerebellar arachnoid cysts exerting mass effect and associated with cerebellar tonsillar ectopia in an otherwise healthy adult.
Rarely, midline or unilateral posterior fossa arachnoid cysts (ACs) exert local mass effect resulting in the symptoms and signs of cerebellar and brainstem dysfunction. These cysts are sometimes seen in conjunction with cerebellar tonsillar ectopia (TE), although the relationship between these two entities is unclear. Bilateral ACs in the posterior fossa are virtually unprecedented. We describe...
متن کاملDermatomyositis paraneoplastic syndrome before symptomatic tonsillar squamous cell carcinoma: a case report.
BACKGROUND Paraneoplastic syndromes are systemic or organ-related functional tumor-associated changes that arise distant to the tumor. METHODS AND RESULTS We present a rare case of a 63-year-old man with dermatomyositis as a paraneoplastic syndrome developing more than a year before clinical manifestations of tonsillar squamous cell carcinoma (SCC). He subsequently developed stage T1N2bM0 IVA...
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ژورنال
عنوان ژورنال: Journal of Neurology, Neurosurgery & Psychiatry
سال: 1998
ISSN: 0022-3050
DOI: 10.1136/jnnp.64.2.221