Cerebrospinal fluid leak presented with the C1-C2 sign caused by spinal canal stenosis: a case report.

Background: Intracranial hypotension is a disorder characterized by low cerebrospinal fluid (CSF) pressure typically caused by loss of CSF. Although some mechanisms account for the CSF leakage have been elucidated, spinal canal stenosis has never been reported as a pathological cause of intracranial hypotension. C1-C2 sign is a characteristic imaging feature, which indicates CSF collection between the spinous processes of C1 and C2, occasionally observed on magnetic resonance imaging (MRI) in patients with intracranial hypotension.

[Efficacy of percutaneous vertebroplasty for multiple myeloma].

Multiple myeloma is commonly associated with bony lesions and skeletal destruction. Percutaneous vertebroplasty (PVP) was performed in five patients with multiple myeloma for vertebral body fractures. Four patients reported a decrease in their pain after the procedure, and in all patients an improvement in their performance status could be noted.

[A case of idiopathic thoracic spinal cord herniation].

We report a case of idiopathic thoracic spinal cord herniation. A 63-year-old female came to our hospital complaining of a slowly progressive gait disturbance that began 5 years ago. She showed signs of a left dominant spastic paraparesis and sensory disturbance.

Intracranial cerebrospinal fluid measurement studies in suspected idiopathic normal pressure hydrocephalus, secondary normal pressure hydrocephalus, and brain atrophy.

Objective: To investigate intracranial cerebrospinal fluid (CSF) distribution in patients with a clinical diagnosis of idiopathic normal pressure hydrocephalus (INPH).

Methods: 24 patients with a clinical diagnosis of INPH were studied. Control groups comprised 17 patients with secondary normal pressure hydrocephalus (SNPH), 21 patients with brain atrophy, and 18 healthy volunteers.