[Case report of traumatic hemorrhage from the anterior choroidal artery].

Traumatic hemorrhage from the anterior choroidal artery is very rare. A 74-year-old male was admitted to our hospital immediately after a traffic accident. CT on admission showed right intracerebral hematomas in the posterior limb of the internal capsule and the upper part of the right cerebral peduncle.

[Isolated trigeminal sensory neuropathy due to pontine infarction of the root entry zone--report of two cases].

Secondary trigeminal neuralgia and isolated trigeminal neuropathy due to ischemic lesion of the pons are very rare. We report 2 patients with pontine infarct transecting the central trigeminal pathways resulting in trigeminal neuropathy and/or neuralgia. Case 1: A 48-year-old female presented with lancinating pain and paresthesia and hypesthesia in the right V2 and V3 distributions.

[Rapid disappearance of acute epidural hematoma by percutaneous aspiration of subperiosteal hematoma--case report].

We present the case of an 8-year-old boy who was injured in a bicycle accident and was admitted with a right frontal skull fracture, an acute epidural hematoma, a right frontal laceration, and a subperiosteal hematoma on admission. After the frontal cutaneous suture, the subperiosteal hematoma was aspirated by the percutaneous needle. Two hours later, a CT scan revealed that the epidural hematoma was disappeared.

[Conjugate deviation in ischemia of medial medullary oblongata--report of three cases].

Medial medullary infarct (MMI) is a rare type of brain stem infarction. Its clinical picture was characterized by contralateral hemiparesis, deep sensory disturbance, and ipsilateral hypoglossal paresis, but conjugate deviation or nystagmus is uncommon as initial symptom. Case 1: A 73-year-old man developed vomiting and vertigo.

[Evaluation of the vocal tract during Japanese vowel production in myasthenia gravis using magnetic resonance imaging].

We report a 65-year-old Japanese female whose primary symptom of myasthenia gravis was related to rhinolalia aperta. The vocal tract during vowel production was evaluated using two-dimensional fast advanced spin echo (2D-FASE) MR images on supine and prone position. Before treatment, MRI on prone position demonstrated anterior shift of the palatine uvula and the tongue during Japanese "a", "u" and "o" production following the gravity, the former suggested the paresis of the sphenosalpingostaphylinus and elevator veli palatini muscle and the latter the paresis of the styloglossal and hypoglossal muscles.

[Delayed epidural bleeding caused by traumatic pseudoaneurysm of the middle meningeal artery: case report].

A 16-year-old man who presented with delayed bleeding of epidural hematoma is reported. Computed tomography (CT) on admission demonstrated a small amount of right epidural hematoma and a small fracture of the right lateral orbital wall. He was treated conservatively.

[Case report of Rosai-Dorfman disease mimicking pachymeningitis].

Rosai-Dorfman disease (RDD) is a rare idiopathic histioproliferative disease affecting the lymph nodes. Extranodal sites may be involved and occasionally represent the initial or sole manifestation of the disease. Central nervous system manifestations especially are exceedingly rare.

[Rapid improvement of callosal edema by thiamine administration in Marchiafava-Bignami disease: a case report].

Marchiafava-Bignami disease (MBD) associated with chronic alcoholism is a fatal disorder characterized by demyelination of the corpus callosum. A 62-year-old Japanese man, a heavy drinker for his last over 10 years, was admitted to our hospital because of acute onset of speech disturbance. The first MR images showed abnormal signal intensity of the corpus callosum, which was a typical finding of MBD, but no signal abnormality on diffusion-weighted images.