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Biomedical subjects

T Orita

Publications and source records attributed to T Orita.

At least 91 records · Page 5Linked to original sources
PubMed1987

Brain abscess with hemorrhage.

A very rare case of brain abscess with hemorrhage in the basal ganglia is reported. We discuss the difficulties in the differential diagnosis and the mechanism of hemorrhage.

Adult↗
PubMed1987

[A case of iatrogenic traumatic intracranial aneurysm].

A case of traumatic aneurysm due to an arterial injury during removal of a tuberculum sellae meningioma is reported. A 43-year-old man had undergone craniotomy for removal of the tumor. It was very hard with many feeders from bilateral anterior cerebral arteries (ACA), so the resection between the left ACA and the tumor was difficult. A small artery was accidentally pulled out from the left ACA and bleeding occurred from the small artery in the artery. The ACA was trapped temporarily with two clips and was coated using Oxycell and Biobond. The bleeding was stopped by this procedure and the blood reflowed. This tumor was removed totally, but postoperative CT scan showed an enhancing small lesion in the anterior part of the left basal ganglia 10 days after operation. The angiograms performed next day revealed a fusiform aneurysm of the left proximal ACA near the anterior communicating artery. The skull was reopened to treat the aneurysm. The aneurysm arising from just a bleeding point in the previous operation was oval in shape without neck, so it was trapped by two small aneurysm clips and resected. The patient's condition was uneventful after the second operation. Pathological diagnosis of the aneurysm was confirmed a false aneurysm. Iatrogenic traumatic aneurysms caused by neurosurgical procedure has been reported in 29 cases. Eighteen cases showed bleeding from injured artery during surgery and a half of them showed rupture from the aneurysm within one month after operation. Such doubtful cases of traumatic aneurysm should be diagnosed by angiography and operated as early as possible.

Adult↗
PubMed1981

[A case of "true" posterior communicating artery aneurysm (author's transl)].

A 57-year-old woman complained of severe headache and vomiting of a week's duration. Spinal tap showed bloody CSF and cerebral angiography revealed the "true" posterior communicating artery aneurysm. Left frontotemporal osteoplastic craniotomy and trapping of the aneurysm were performed on August 28, 1979. After operation right hemiplegia, left oculomotor palsy and the disturbance of consciousness developed. Postoperative CT scan showed a hemorrhagic infarction at the left basal ganglia. Since then she has been getting better and was discharged, able to walk, from our hospital 6 months after operation. We considered the anatomical importance of perforating arteries from posterior communicating artery and propose that true posterior communicating artery aneurysm should be classified separately from our experiences and literature.

Cerebral Angiography↗
PubMed1979

Pineal apoplexy.

A case of haematoma in the pineal region is reported in a patient whose initial symptom was subarachnoid haemorrhage. The encapsulated haematoma and surrounding blood clots were removed surgically. Haemorrhage into a pineal cyst may have been the cause of this particular intracranial mass.

Cerebrovascular Disorders↗
PubMed1979

[A case of congenital dermal sinus in the parietal region (author's transl)].

A congenital dermal sinus at the midline of the parietal region, which extends into the falx, is relatively rare. The following case is illustrative. A 3-year-old girl was noticed by her parents to have tumor at the midline of the parietal region without other disturbances and complaints. This girl had the normal mental and motor development, and was admitted to our clinic for cosmetic surgery. A round, elastic soft tumor, roughly 1x1x1 cm in diameter, was located at the midline of the parietal region. This tumor had a port wine cutaneous discoloration and an absence of normal hair growth in this area. Abnormal hair did not protrude from the sinus. This tumor had no dimple nor sinus opening. Skull XP showed a round lucent bone defect at the midline of the parietal region. This bone defect with sclerotic margin, was about 1 cm in diameter. Skull XP and tomography, with contrast medium injection into the tumor, showed that this tumor extended into the falx through bone defect. Angiography showed that there were no relations between the tumor and the superior sagittal sinus. PEG showed that there were no mass lesion nor dilatation of ventricles. Both spinal tap and EEG were normal. Operation for the congenital dermal sinus was performed on Nov. 4, 1977. This congenital dermal sinus extended into the falx and congenital cell rest tumor was not elicited.

Child, Preschool↗
PubMedDate not supplied

Transient hydrocephalus due to movement of a clot plugging the aqueduct.

A rare case of transient hydrocephalus is reported. A 64-year-old woman presented with headache. Computerized tomography (CT) scan revealed hydrocephalus with tiny blood clots in the left foramen of Monro and in the aqueduct. Six hours after the onset, the signs and symptoms disappeared spontaneously. The second CT showed improvement of the hydrocephalus with migration of the clot into the i.v. ventricle. Aqueductal trapping and releasing of the clot formed by bleeding from the choroid plexus located in the left foramen of Monro was suspected for the origin of the transient hydrocephalus.

Cerebral Aqueduct↗