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Biomedical subjects

S Sakaki

Publications and source records attributed to S Sakaki.

At least 163 records · Page 9Linked to original sources
PubMed1986

Development of the new cerebral angio-CT technique and magnetic resonance angio-imaging.

Using dynamic scanning, multiple cerebral computed angiotomography scans were obtained after a single bolus injection of contrast medium. The following three different techniques and their clinical applications were investigated. 1) Overlapping scanning was applied to detect unruptured intracranial aneurysms. 2) Sequential scanning was mainly applied for larger lesions such as isodense chronic subdural hematomas. 3) Two-step contrast-enhanced scanning was useful for investigating the relationship between tumor and surrounding vessels. Cerebral magnetic resonance angio-imaging was recently investigated as a noninvasive procedure using spin-echo magnetic resonance imaging.

Cerebral Angiography↗
PubMed1986

[A case of chronic subdural hematoma associated with an unruptured cerebral aneurysm detected by cerebral computed angiotomography].

One case of chronic subdural hematoma associated with an unruptured cerebral aneurysm detected by cerebral computed angiotomography is reported. A 44-year-old female slipped and hit her head without loss of consciousness, one month ago. Recently she complained of headaches and visited the department of Neurosurgery, Washokai Sadamoto Hospital on May 21, 1985. There were no physical and neurological signs on examination. Plain CT scans showed a crescent-shaped high density area in the left frontal region with a slight mass sign. She was diagnosed as having a possible chronic subdural hematoma and further examination was recommended. Biplane ultrafast overlapping cerebral computed angiotomograms clearly demonstrated a so-called avascular area delineated by enhanced superficial cerebral vessels with contrast medium. Furthermore, a marked high density mass measuring 8 mm X 10 mm X 6 mm in diameters was simultaneously demonstrated around the right anterior clinoid process on the same image, suggesting a cerebral aneurysm. Right carotid angiograms showed a right internal carotid-posterior communicating junction aneurysm. The irrigation of the left chronic subdural hematoma was carried out on May 24 and the neck clipping of the right IC-PC junction aneurysm was done two weeks later. During the operation, there were no findings suggesting a previous subarachnoid hemorrhage from the aneurysm, but a bleb was found on the aneurysm. The post-operative course was uneventful. Since the introduction of the CT scanner, chronic subdural hematomas are usually operated without cerebral angiograms.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1984

Aneurysm of the anterior inferior cerebellar artery at the internal auditory meatus.

An aneurysm of the anterior inferior cerebellar artery extending into the internal auditory meatus is reported. The patient developed headache and vomiting caused by a subarachnoid hemorrhage, and rapidly showed signs and symptoms of a lesion in the cerebellopontine angle soon after the onset. At operation, a clip was successfully applied to the neck of the aneurysm. The characteristic clinical findings are briefly reviewed.

Adult↗
PubMed1984

Brain abscess secondary to intracranial extradural epidermoid cyst.

A case of brain abscess in the right temporal lobe secondary to an intracranial extradural epidermoid cyst in the right parasellar region is reported. The etiology of the brain abscess in this particular case was deduced using the findings of computed tomography, carried out several times over a 3-year period, after an initial operation to remove the epidermoid cyst. One of the scans showed a very-low-density spot in the right parasellar region compatible with air, suggesting a communication between the intracranial space and the paranasal sinuses.

Brain Abscess↗
PubMed1984

Occlusion of the great vein of Galen associated with a huge meningioma in the pineal region. Case report.

The authors report a case in which the great vein of Galen was occluded during removal of a huge meningioma in the pineal region. The patient recovered satisfactorily without any serious neurological deficits after the operation. Preoperative angiography had shown marked stenosis of the great vein of Galen and anastomoses between the deep and the superficial venous systems. Occlusion of the great vein of Galen may be well tolerated in particular cases if this vein is already compromised.

Adult↗
PubMed1982

[Migration of subduro-peritoneal shunt into the subdural space of an infant (author's transl)].

A ten-month-old baby was admitted to our clinic with the diagnosis of bilateral chronic subdural hematomas. He had complained of general convulsion during the past 3 months. Evacuation of hematomas was performed on both sides through burr holes in the parietal region. Several weeks following the evacuation of hematomas, subduroperitoneal (S-P) shunting operation was further performed bilaterally for the collection of fluid in the subdural spaces, using a "Pudenz" shunting catheter with a reservoir. The catheter was fixed at the connector of the reservoir and the peritoneal catheter by several silk sutures to the epicranium. Three weeks after S-P shunting operation the right shunting system was not felt on his head on palpation, and the abnormal high density spots were shown inside the right subdural space on CT. The right craniotomy revealed that the whole shunting system was located in the right subdural space. Technical problems of the shunting operation and the several factors of the patient which may contribute to such a rare complication of this surgical procedure are briefly discussed.

Cerebrospinal Fluid Shunts↗
PubMed1981

A cerebral neuroblastoma with extracranial metastases.

A rare case of cerebral neuroblastoma with extracranial metastases is reported. This patient was followed for over ten years. The biopsy specimen of the brain tumor taken at the first operation revealed the architecture of a poorly differentiated ependymoma having perivascular rosettes. The histological pattern of the second biopsy taken eight years after the first operation was highly cellular and vascular with abundant mitoses, showing Homer-Wright rosettes. The histological diagnosis of this second specimen was a cerebral neuroblastoma. The problem of the multipotentiality of the brain tumor is discussed.

Brain Neoplasms↗