Diffuse-Type Tenosynovial Giant Cell Tumor Arising in the Temporomandibular Joint Extending to the External Auditory Canal: A Case Report and Literature Review.

A 74-year-old Japanese woman with a 1-year history of right preauricular pain and a 2-month history of bleeding from the right ear was admitted to our department. Tumor was observed in the anterior wall in the right external auditory canal. Bony swelling of the right preauricular area was palpated.

[A supratentorial primitive neuroectodermal tumor exhibiting pathological characteristics of medulloepithelioma: a case report].

A 50-year-old female presented with headache symptoms and left hemifacial paresis. Brain computed tomography and magnetic resonance images demonstrated a right frontal lobe tumor with hemorrhage and calcification. A gross total resection was carried out.

Experimental petit mal-like seizure induced by microinjection of kainic acid into the unilateral mediodorsal nucleus of the thalamus.

The mediodorsal nucleus (MD) of the thalamus has reciprocal projections with the frontal cortex and limbic system, and may be involved in absence seizures. Kainic acid was injected into the left MD of Wistar rats, and behavior and electroencephalography were monitored for 24 hours, then continued intermittently for 8 weeks. The rat brains were then examined histologically.

Focal cortical dysplasia: pathophysiological approach.

Overview: Clinical and experimental studies on focal cortical dysplasia (FCD) were carried out.

Materials And Methods: For the experimental study, an experimental FCD model of rats was developed. Twenty Wistar rats at 0-2 days after birth were used for the study.

Clinical application of experimental cortical dysplasia in rats.

This report details clinical and experimental studies of focal cortical dysplasia. The first part deals with 14 surgical cases of children with intractable epilepsy. At surgery, intraoperative electrocorticography was performed to localize the epileptic foci under neuroleptanalgesia.

Clinical and experimental studies of epilepsy associated with focal cortical dysplasia.

The results of clinical and experimental studies on epilepsy associated with focal cortical dysplasia (FCD) are presented. We have been interested in the findings of abnormal increases in the numbers of small vessels in specimens of FCD resected from epilepsy patients. In the clinical study of 13 patients with epilepsy, specimens of FCD or dysembryoplastic neuroepithelial tumor (DNT) were examined using immunohistochemistry.