Miyazaki syndrome: Cervical myelo/radiculopathy caused by overshunting. A systematic review.

Objectives: Miyazaki syndrome is a cervical myelopathy or radiculopathy caused by cervical epidural venous congestion, due to cerebrospinal fluid over-drainage by an implanted ventricular shunt. The complex pathophysiology includes CSF pressure-changes consistent with the Monro-Kellie doctrine and a non-functional Starling resistor, leading to spinal epidural venous plexus enlargement and dilation. This venous congestion may be significant enough to exert compression on the spinal cord or nerve roots.

[Treatment-induced tumor-like lesions in the course of neurooncological therapy].

The proper interpretation of imaging changes in the course of multimodal neurooncological therapy (neurosurgery, radiotherapy, chemotherapy, stereotactic radiosurgery) is crucial. The appearance of abnormal or new contrast-enhancing lesions does not indicate obvious tumor progression, in the contrary they are frequently induced by the oncological therapy itself. The differentiation of real tumor progression from therapy-induced lesions is essential, since the diagnosis of progressive disease results in the termination of the current regimen and initiation of second or third line therapy, if possible.

Clinical experiences with Creutzfeldt-Jakob disease: three case studies.

The clinical picture, electroencephalographic, imaging and cerebrospinal fluid parameters as well as the molecular background of Creutzfeldt-Jakob disease have been well explored. The diagnostic criteria, offering clinicians a fair chance to identify these patients in vivo, have recently been updated. However, the diagnosis is still a challenge in everyday neurological routine.

Lateral ventricle gliomas and central neurocytomas in adults diagnosis and perspectives.

Neuroimaging data of lateral ventricle gliomas and central neurocytomas diagnosed in one institution were reviewed and compared to the corresponding literature data. CT and MRI imaging characteristics of the two tumour types are rather different, both in reported cases as well as in our material. In our series ventricular ependymomas (eight cases) were mostly hyperdense with pronounced contrast uptake.

[Occipital sinus as a potential differential diagnosis in patients suspect of dural sinus thrombosis--a case report].

Introductions: The diagnosis of dural sinus thrombosis despite of using modern imaging techniques still remains a difficult problem. For satisfactory interpretation of CT and MR scans it is indispensably important the knowledge of anatomical variations and possible imaging artifacts. One of the relatively rare developmental variations--giving chance for making false positive diagnosis--is the occipital sinus with hypoplasia or agenesis of transverse sinus.

[Hormone disorders caused by intrasellar persistent trigeminal artery].

Persistent trigeminal artery is a relatively frequent type of intracranial arterial developmental anomalies. The diagnostic tools for demonstration previously consisted of carotid angiography, later CT and DSA and nowadays MR and MRA. The practical benefit of the diagnosis is to avoid any hazard at the operation of associated hypophysis adenomas and aneurysms and could also give a possible explanation for apparent hormonal abnormalities.