Biomedical subjects

Y Sakuta

Publications and source records attributed to Y Sakuta.

11 recordsLinked to original sources

PubMed1998

[Occlusion of anterior and middle cerebral arteries after closed head injury: a case report].

We report a case of traumatic anterior and middle cerebral arteries occlusion. A 23-year-old man was admitted to our hospital following an automobile accident. He was comatose and had a small skin laceration on the left temporal region. The pupils did not react to light. CT scan revealed traumatic subarachnoid hemorrhage at the basal cistern and left sylvian fissure. His consciousness gradually recovered, but he became aphasic 4 days after the trauma. Cerebral angiography showed a irregularity of the left internal carotid artery at C1 portion and occlusion of left anterior and middle cerebral artery at A1 and M1 portion. CT scan showed low density area in the left middle cerebral artery distribution. Five months later, follow-up angiography disclosed recanalization of anterior and middle cerebral arteries. In our case, thrombus formation at C1 portion of left internal carotid artery might have occurred to result in the embolic occlusion of the anterior and middle cerebral arteries. To date, 34 cases of traumatic middle cerebral artery occlusion have been reported. However there have been only 2 cases which accompanied anterior cerebral artery occlusion.

Accidents, Traffic↗

PubMed1997

[Penetrating brain injury and traumatic aneurysm caused by a nail gun].

A rare case of penetrating brain injury and traumatic aneurysm caused by a nail gun was described. A 45-year-old male was admitted to our hospital on October 13, 1995 due to a penetrating head injury. He had used a nail gun in a suicide attempt. On admission, he presented with moderate consciousness disturbance, right hemiparesis and aphasia. Several small wounds were observed at the bilateral temporal scalp. The skull films showed that there were five nails in the left side and four nails in the right side perforating in the skull. The CT revealed a small hematoma at the left temporal lobe. The cerebral angiograms did not show any particular findings. Under local anesthesia, each nail was extracted carefully. Suddenly, his neurological damage aggravated and the CT showed a massive hematoma in the left temporal lobe. Emergent craniotomy was performed and the hematoma was totally evacuated. Rehabilitation was carried out and he recovered enough to be able to walk. Angiograms four months after the injury revealed the formation of a traumatic aneurysm at the peripheral part of the left middle cerebral artery (cortical cerebral aneurysm). We did not perform a direct operation for the aneurysm since the contrast medium remained in the aneurysm until the late venous phase. This aneurysm disappeared spontaneously after another four months' observation. Although many penetrated head injuries have been previously reported, the present case is the first report of a traumatic aneurysm associated with nail gun injury.

Brain Injuries↗

PubMed1995

[Bilateral carotid artery agenesis with corpus callosum hypogenesis--a case report].

To date, only 21 cases of bilateral absence of the internal carotid artery have been reported. The authors report a case of bilateral internal carotid artery agenesis combined with corpus callosum hypogenesis and cavum vergae. A 47-year-old man was admitted to our hospital complaining of occasional vertigo. Physical and neurological findings were normal except for severe mental retardation. Bilateral carotid angiograms showed the absence of both internal carotid arteries. Left vertebral angiography demonstrated filling of the right and left anterior and middle cerebral arteries by the posterior communicating artery. The ophthalmic arteries were opacified from the external carotid artery via the middle meningeal artery. A bone-targeted CT scan demonstrated the absence of the bony carotid canals bilaterally, and an MRI study, revealed that the corpus callosum was hypogenetic, and cavum vergae was observed.

Agenesis of Corpus Callosum↗

PubMed1989

[A case report of hypoplasia of the root portion and the intermediate portion of the left internal carotid artery associated with an unusual primitive collateral circulation between the left internal carotid artery and the left external carotid artery].

The internal carotid artery is one of the most stable arteries and its absence is very rare. We reported a case of hypoplasia of the root portion and the intermediate portion of the left internal carotid artery associated with an usual primitive collateral circulation between the left internal carotid artery and the left external carotid artery. A 57-year-old male developed right hemiparesis of sudden onset 3 days prior to admission. On admission, right hemiparesis and right minimal facial palsy was observed. The left direct carotid angiogram revealed that the root portion and the intermediate portion of the left internal carotid artery were hypoplastic. There was an unusual primitive collateral circulation between the left internal carotid artery and the left external carotid artery. From an embryological point of view, normally, the internal carotid artery is derived from the third aortic arch and the dorsal aorta when the embryo is attained the 3-mm stage. The root portion of the internal carotid artery is formed from the third aortic arch. The dorsal aorta between the third and the first aortic arch form the intermediate portion. The distal part of the internal carotid artery originates from the dorsal end of the first aortic arch. The common carotid artery begins to form in the 12-mm to 14-mm embryo, following involution of portion of the ventral aortic root between the third and the fourth aortic arch. The external carotid artery arises from the aortic sac and migrate up to the third aortic arch.(ABSTRACT TRUNCATED AT 250 WORDS)

Aorta, Thoracic↗

PubMed1980

[Traumatic acute intracerebellar hematoma--case of complete recovery (author's transl)].

We reported a case of traumatic acute intracerebellar hematoma which was surgically treated with good success. Of all types (by region) of traumatic intracranial hematoma, the posterior fossa hematoma, particularly the intracerebellar hematoma is of relatively rare kind. Our patient was a 7-year-old girl, who fell into coma and showed decerebrate posture four hours after a blow of the occiput. On CT, a left intracerebellar hematoma was found, and a suboccipital craniectomy was therefore immediately done to remove the hematoma. Hematomas were found also in the extradural and subdural spaces. Postoperatively she developed typical cerebellar signs and right 7th cranial nerve palsy plus left hemiparesis (Millard-Gubler syndrome), but in six months, her neurological abnormalities disappeared and she recovered completely and returned to her normal life. When a severely injured patient who has an occipital contusion or laceration was found, we should consider the existence of posterior fossa hematoma.

Acute Disease↗

PubMed1979