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Biomedical subjects

T Ninchoji

Publications and source records attributed to T Ninchoji.

At least 37 records · Page 2Linked to original sources
PubMed1989

[Unilateral nerve deafness due to rupture of a right vertebral artery aneurysm. Case report].

A 49-year-old female with no history of hearing disturbance developed sudden onset of headache and was admitted with no neurological deficits other than mild nuchal rigidity. Computed tomography (CT) showed subarachnoid hemorrhage. Four-vessel cerebral angiography disclosed no aneurysm. A second angiogram obtained on the 14th day showed vasospasm of the bilateral posterior cerebral arteries and right anterior inferior cerebellar artery, but still failed to demonstrate an aneurysm. Following the second angiography, she developed mild disturbance of consciousness and cerebellar ataxia of the right limbs, and repeat CT showed an infarct in the right cerebellar hemisphere. When she regained consciousness a few days later, she was completely deaf on the right side. The third angiography revealed a right vertebral artery dissecting aneurysm. Following clipping of the proximal portion of the right vertebral artery, she did well and was discharged, although right cerebellar ataxia and deafness persisted. Neuro-otological evaluation, including pure-tone audiography, auditory brainstem responses, electrocochleography, and caloric testing, indicated that her deafness resulted from ischemia in the territory of the right internal auditory artery due to vasospasm.

Deafness↗
PubMed1989

[Significance of "on-off phonation test" to detect oral diadochokinesia in dysarthric patients].

Oral diadochokinetic abilities in 6 patients with ataxic dysarthria (ATAXICs), 6 with spastic dysarthria (SPASTICs), 3 with parkinsonism (PARKINs), and 6 normal subjects (NORMALs) were investigated using repetition of monosyllable /pa/ and "on-off phonation test" in which they had been requested to repeat interrupted vowel /a/ as fast as possible. Oscillographic as well as photographic records of the speech acoustic signal were obtained to analyse interval for a syllable, which consisted of voiced and unvoiced intervals, and peak-value of voiced interval. The results were as follows: 1) ATAXICs and SPASTICs showed prolonged interval for a syllable, yet that of PARKINs was within normal range, when tested either in /a/ or in /pa/. 2) Standard deviation and coefficient of variation for intervals of syllable and those of peak-values in voiced interval could not distinguish their characteristics among ATAXICs, SPASTICs, and PARKINs. 3) In "on-off phonation test", ATAXICs showed prolonged unvoiced intervals, while SPASTICs did prolonged voiced intervals. Results suggested that hypotonic laryngeal muscles in ATAXICs might result in prolongation of unvoiced interval, but that prolonged voiced interval related to biased hypertonus of laryngeal adductor. It is concluded that "on-off phonation test" could, with reasonable sensitivity, reflect the phonatory dynamics of laryngeal muscles in dysarthric patients.

Aged↗
PubMed1989

[Isolated fracture of the lateral mass of the atlas: a case report].

Isolated fracture of the lateral mass of the atlas is extremely rare. The authors report such a case because of its rarity and to emphasize the usefulness of computed tomography (CT) for its diagnosis. The case was that of a 63-year-old male, who had been hit on his left parietal region by a board falling from behind, and which forced him to hyperflex his neck. He complained of neck pain on arrival at our hospital without any resulting neurological deficits. Routine plain cervical spine films were normal, but CT scan revealed a vertical fracture of the lateral mass of the atlas. He was placed in a Halo brace for several months, and after 3 months the fracture was seen, by CT scan, to have healed without complications. Fractures of the atlas are uncommon. They comprise 2-13% of all fractures of the cervical spine, and about 1.3% of the fractures of the entire spinal column. An isolated fracture of the lateral mass of the atlas has been reported only in seven cases including our case previously and this is the first case in which CT scan could make the diagnosis. We emphasize that CT scan is a most useful tool for the diagnosis of the fracture.

Braces↗
PubMed1989

[Trigeminal nerve dysfunction as a false localizing sign: a case of the choroid plexus papilloma in the IVth ventricle].

Trigeminal nerve dysfunction as a false localizing sign, although rate, is known to occur. A case of choroid plexus papilloma in the 4th ventricle with hemifacial numbness is presented. A 24-year-old woman had been suffering from intermittent facial numbness on the left side for 3 months prior to admission. She noted no other symptoms. Neurological examination disclosed marked papilledema, horizontal nystagmus on both lateral gazes and mild truncal ataxia. CT scans showed a calcified mass lesion in the 4th ventricle on the midline extending into the left lateral recess. It was enhanced homogeneously with contrast material. The pathogenesis of such a false localizing sign and its clinical implications were discussed from the anatomical point of view.

Adult↗
PubMed1987

[Clinical study of traumatic cerebellar contusion].

Numerous authors have reported cases of traumatic cerebellar contusion. A few authors have emphasized delayed deteriorations in patients with cerebellar contusion. Since CT scan was introduced into daily clinical practice, it has become obvious that cerebellar contusion were not necessarily associated with severe head injuries. Of 1176 head-injured cases admitted to our department in the past five years, eight (0.7%) were diagnosed by CT scans to have cerebellar contusion. Among eight cases, two of them were deeply comatose on admission because they had concomitant diffuse cerebral contusions and died soon after admission. Remaining six cases had predominantly cerebellar contusion on CT scans and showed minimal neurological deficits on admission. Most of them recovered without any significant disabilities. But two of them deteriorated several hours after injury, showing brain-stem compression for which emergency posterior fossa decompression were carried out without recovery. One of them underwent external decompression which resulted in intracerebellar massive hemorrhage and the other missed the timing of surgery. In conclusion, it is important to prepare for unexpectedly rapid deterioration, for which wide craniectomy and sufficient internal decompression would be required.

Adult↗
PubMed1984

Traumatic intracerebral haematomas of delayed onset.

25 cases of traumatic intracerebral haematomas of delayed onset were found among 775 cases of acute head injuries. All these 25 cases were analysed both clinically and with computed- tomographical studies. Their clinical features were different from those of classical " traumatische Spät- Apoplexie " originally described by Bollinger in 1891, in the following aspects; absence of the symptom-free interval and absence of apoplectic onset of symptoms after a relatively long lucid interval. These traumatic intracerebral haematomas of delayed onset were, on the other hand, characterized by the following; the patient was injured when the head was in motion, the injury was not necessarily severe, the onset of signs and symptoms were gradual and insidious, all 25 cases but 4, had cranial vault fractures and/or basal skull fractures, precipitating factors could not be identified, though hypotensive episodes were present in 60% of cases, intracerebral haematomas appeared within 72 hours following the head injury in most of cases, though more than 4 days later in a small number of cases, the appearance of such intracerebral haematomas suggested an unfavourable outcome, cerebral contusion might be a major contributory factor.

Adolescent↗