[A Case of Spinal Epidural Hematoma Presenting with Transient Hemiplegia].

We report a rare case of a patient with spinal epidural hematoma who presented with transient hemiplegia. A 90-year-old man awakened from sleep due to sudden neck pain. Fifteen minutes later, the man experienced progressively worsening weakness in his left hand, and was transported in an ambulance to our hospital.

[Current knowledge on the genetic factors involved in moyamoya disease].

Moyamoya disease (MMD) is characterized by progressive stenosis and occlusion of the terminal portion of the bilateral carotid arteries as well as arterial collateral vessels. The etiology of MMD, however, remains unknown. Several pieces of evidence suggest the involvement of genetic factors in MMD: over 10% of MMD patients have affected blood relatives; concordance in the affection status has been proven in 80% of identical twins; and there is an ethnic predisposition to MMD, the incidence of the disease being the highest in the Asian population.

Ectopic pituitary adenoma with malignant transformation.

We report here a case of ectopic pituitary adenoma with malignant transformation after repeated relapses. First, an ectopic pituitary adenoma producing follicle-stimulating hormone was found in the nasal cavity extending to the frontal cranial fossa. Despite repeated surgical resections of the tumor, it recurred three times in 2 years.