Neuroradiology
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A rare case of aseptic thrombosis of the right vein of Labbé in a young woman is reported. Cerebral venous thrombosis was suggested by computed tomography and confirmed by angiography. Mild left-sided neurological deficits resolved almost completely. The combination of a nonspecific clinical picture with an atypical lesion on CT may favour the diagnosis of cortical venous thrombosis.
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Magnetic resonance angiography (MRA), combined with submillimeter magnetic resonance tomographic angiographic sections (MRTA) showed vascular compression of the 7th cranial nerve or its root exit zone (REZ) in the brain stem in 24 of 37 patients (64.86%) with hemifacial spasm. MRA alone was positive for REZ compression in only 19 (51.4%) cases, while conventional MRI was even less revealing, only 10 (27%) cases being positive.
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Co-existence of Chiari I malformation and myelomeningocele is uncommon. Syringomyelia, when associated with a Chiari I malformation, classically involves the cervical spinal cord. Intramedullary extension of lipoma is unusual in lipomyeloschisis. A patient with lumbar lipomyelomeningocele with tethered cord, lower thoracic syringomyelia and Chiari I malformation, shown by MRI is reported.