OBJECTIVE To quantify the effects of surgery on the thermal deficits of syringomyelia and assess the predictors for such effects. METHODS The subjects were 16 consecutive patients (12 men, 4 women; mean (SD) duration of sensory symptoms, 5.1 (4.5) years) presenting with the typical symptoms of syringomyelia related to Chiari I malformation or trauma, and requiring surgical treatment. They wer...

may present with well-defi ned symptoms of ulnar nerve compression at the elbow; electrical studies, however, may have normal results in the ulnar nerve but reveal changes of carpal tunnel syndrome (which may be either subclinical or less symptomatic to the patient). Post-traumatic thickening of the brachial fascia in the distal arm can produce a simultaneous median and lateral antebrachial ner...

CASE SUMMARY A 10-year-old cat presented 5 days after a traumatic event with acute recumbency followed by some clinical improvement. The neuroanatomical localisation was the C1-C5 spinal cord segments. Initial survey radiographs, including lateral flexed views, showed no convincing abnormalities. Magnetic resonance imaging (MRI) revealed a marked focal intramedullary lesion at the level of the ...

A 64-year-old woman was admitted to our hospital with slowly increasing paresis of the extremities. Because an intramedullar tumor was suspected, cervical myelography with lateral puncture of C1-C2 was performed. A 22-gauge needle was used, and normal return of clear, colorless spinal fluid was seen. During the uneventful injection of Omnipaque (iohexol, 240 mg I/ml), a longitudinal stripe of c...

AIM To explore the surgical effect of cerebellar tonsillectomy with suboccipital decompression and duraplasty by small surgical incision (3~4cm around the foramina magnum) on treating Chiari I Malformation (CM I) patients. MATERIAL AND METHODS A retrospective study was undertaken on 76 CM I patients treated by this surgery. The surgical efficacy on clinical symptoms and syringomyelia were ove...

Auditory neurons of the anterior forebrain (AF) of zebra finches become selective for song during song learning. In adults, these neurons respond more to the bird's own song (BOS) than to the songs of other zebra finches (conspecifics) or BOS played in reverse. In contrast, AF neurons from young birds (30 d) respond equally well to all song stimuli. AF selectivity develops rapidly during song l...

BACKGROUND AND PURPOSE The cause of syringomyelia in patients with Chiari I remains uncertain. Cervical spine anatomy modifies CSF velocities, flow patterns, and pressure gradients, which may affect the spinal cord. We tested the hypothesis that cervical spinal anatomy differs between Chiari I patients with and without syringomyelia. MATERIALS AND METHODS We identified consecutive patients wi...

In contrast to human phonation, the virtuoso vocalizations of most birds are modulated at the level of the sound generator, the syrinx. We address the hypothesis that syringeal muscles are physiologically capable of controlling the sound-generating syringeal membranes in the ring dove (Streptopelia risoria) syrinx. We establish the role of the tracheolateralis muscle and propose a new function ...

The intramedullary anaplastic ependymoma rarely occurs in the cervicomedullary junction. A 45-year-old woman had a history of right arm pain for several months. Magnetic resonance imaging (MRI) of the cervical spine demonstrated an intramedullary tumor with syrinx at the cervicomedullary junction. The patient underwent a partial resection at another institute. Neurologic deficit worsened after ...