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Biomedical subjects

S Kuramoto

Publications and source records attributed to S Kuramoto.

At least 181 records · Page 10Linked to original sources
PubMed1980

Arachnoid cyst of the quadrigeminal cistern.

The case report of an infant girl with hydrocephalus due to an arachnoid cyst situated at the posterior end of the third ventricle is described. The mechanism of fluid accumulation in the cyst and the choice of surgical treatment are discussed.

Adolescent↗
PubMed1980

[Subdural abscess in infant and child (author's transl].

Two cases of subdural abscess in infant and child treated with irrigation via burr holes were reported. The first case was a 1.4-year-old boy with right hemiparesis and mental retardation since severe head trauma at 9 months old. The patient with manifested with an acute onset of high fever followed by disturbance of consciousness and convulsive seizures 2.5 months prior to admission to our department. During admission in the other hospital, the diagnosis of septicemia caused by E. coli was made by blood cultures when CT scan demonstrated a huge lentiform low density area over the right hemisphere and contralateral crescent low density area. The low density area on the right side was well circumscribed by high density rim which was enhanced by contrast medium. Under the diagnosis of bilateral subdural abscess secondary to septicemia caused by E. coli, irrigation of the purulent cavity was carried out. The contralateral low density area was found to be chronic subdural effusion. The second case of 3-month-old infant who complained of high fever, neck stiffness, unconsciousness and right hemiconvulsions 8 days prior to admission. CT scan showed bilateral crescent low density areas indicating subdural effusion. Subdural punctures performed via the fontanelle revealed pus in the left subdural space and xanthocromic fluid in the right side. The low density area on CT scan was changed to the lentiform high density area circumscribed smooth high density rim during the course of the patient. The subdural abscess was treated with irrigation via burr holes. In this report, the etiology of the subdural abscess and route of infection in addition to follow up study of CT findings were presented with the literature.

Brain Abscess↗
PubMed1980

[A case of cranio-facial dysostosis (Crouzon's disease) associated with hydrocephalus (author's transl)].

A case of cranio-facial dysostosis (Crouzon's disease) associated with enlarged head due to hydrocephalus was reported with special reference to the mechanism of the hydrocephalus. A 2-year-old boy who complained of mental retardation was admitted on Dec 78' when choked disc and dilatation of the lateral ventricle shown on CT scan were also seen. Characteristic signs of hypertelorism, exophthalmos, hypoplastic maxilla and mandibular prognathism indicating cranio-facial dysostosis (Crouzon's disease) were noted on admission. There were no indicative findings of cranial sutures at all on plain skull film, which was seen on previous film at the age of 11 months. Craniometry on plain film indicated narrowed basal angle and shortening of both anterior and posterior cranial fossas. A moderate symmetrical dilatation of the lateral and third ventricle with normal ranged forth ventricle were shown on CT scan. RI cisternography using 111In was normal without ventricular reflex or subarachnoid block. Choked disc was gradually disappeared following shunting operation performed on Dec. 28, 1978. PVG demonstrated the stenosis and ventral displacement of the aqueduct at the site 7 mm from the outlet of the third ventricle. Poststenotic dilatation for 4 mm in width was also noted. These findings suggested that maldevelopment of the enchondral bone at the skull base in cranio-facial dysostosis produced bending of the aqueduct leading to obstructive hydrocephalus as seen in the case.

Cephalometry↗
PubMed1979

Clinical analysis of arachnoid cysts in the middle fossa.

This paper describes the clinical picture and radiological findings of 12 cases of "idiopathic" arachnoid cyst in the middle fossa which the authors have encountered during the past 12 years. Their results are as follows. 1) The age of the patient in 10 out of 12 cases was under 15 years of age, and 8 cases were males. The site of the cyst was on the left side in 9 cases. 2) On plain skull radiography, thinning and bulging of the temporal bone by the lesion, elevation of the lesser wing of the sphenoid, and forward projection of the greater wing of the sphenoid were observed in all cases. 3) On cerebral angiography, a characteristic elevation of the middle cerebral artery and hypoplasia of its insular and opercular portion were observed; and in the venous phase, a defect of the middle cerebral vein, backward deviation of the vein of Labbé, and elevation of the vein of Rosenthal were seen. 4) On Metrizamide (Amipaque) CT cisternography, there were two types, one which communicated and the other which did not communicate with the adjacent subarachnoid space.

Adolescent↗
PubMed1979

[A case of giant aneurysm associated with vertebral fenestration (author's transl)].

A case of giant aneurysm associated with vertebral fenestration was reported. A 18-year-old female had complained of visual disturbance of left eye for past 2 years without headache, nausea and vomiting. Neurological examinations revealed normal except for optic atrophy on the left side. Physiological examinations were normal. Skull plain films showed the small calcification at the left supraclinoid region. Left common carotid angiograms revealed a giant aneurysm at left internal carotid artery measuring 4 X 2 X 2 cm in size, and left middle cerebral artery was poorly visualized. Vertebral angiograms showed the fenestration at left craniospinal junction. Computerized tomograms showed a round, granular high density lesion, and this lesion was clearly homogenously enhanced by contrast medium. It was considered that the direct surgery to this aneurysm might be impossible, because the neck of the aneurysm was located at extradural portion. Ligation of her common carotid artery was performed with Selverstone clamp. Her postoperative course was uneventful, and the postoperative angiograms revealed the reduction of the size of aneurysm. The etiological hypotheses of these cerebral vascular anomalies were briefly discussed.

Adolescent↗
PubMed1979

"True" posterior communicating artery aneurysm.

A "true" posterior communicating artery aneurysm was noted in our series of 490 intracranial aneurysms among 419 patients. The possible surgical significance of this type of aneurysm is discussed.

Cerebral Arteries↗
PubMed1979

Traumatic intracranial hematomas in hemophiliac children.

Three cases of traumatic acute subdural hematoma in hemophilia A children underwent surgical interventions. There were two functional survivors and one death. The management of intracranial hematoma in hemophiliac patients is discussed.

Adolescent↗
PubMed1979

Radiological features of holoprosencephaly.

Three cases of alobar, semilobar, and lobar types of holopresencephaly are reported. Their neuroradiological features and differential diagnosis are described.

Abnormalities, Multiple↗
PubMed1978

[Diagnosis of IIIrd ventricular cyst with "amipaque (metrizamide) CT ventriculography (author's transl)].

The patient is a 17-year-old female. She was suffering from dwarfism, irregular menstruation and obesity. Out of the dwarfism, there were no other neurological abnormalities. The serious clinical examinations were performed, and the cerebral angiography and the CT scan demonstrated the findings of the obstructive hydrocephalus. Namely, enlarged IIIrd ventricle and small IVth ventricle were observed with routine CT scan. Because these findings on CT scan, we thought the hydrocephalus was based on the aqueductal stenosis. The vertebral angiography showed stretched posterior medial choroidal arteries and compressed the basilar tip posteriorly and inferiorly. Moreover, the carotid-angiography demonstrated the following findings, unrolling of the anterior cerebral arteries laterally stretched bilateral lenticulostriate arteries laterally shifted sylvian groups of the middle cerebral arteries, and stretched bilateral internal cerebral veins. Judging from that angiographic findings and CT scan, we thought there would be cystic tumor in the IIIrd ventricle. However, we suspected the IIIrd ventricular tumor, we were not able to differentiated it from the enlarged IIIrd ventricle itself exactly. Because, it's density in CT scan was equaled with that the cerebrospinal fluid. According to above facts, we performed "Amipaque CT ventriculography through the ventricular catheter after V-P shunt. By "the Ampiqque CT ventriculography" we found exactly there was large cystic tumor in the IIIrd ventricle. Their manifestation and some differential diagnosis were discused.

Adolescent↗
PubMed1978

Carcinoma arising in a congenitally dilated biliary tract. Report of a case and review of the literature.

A case of carcinoma arising in a congenitally dilated biliary tract is reported. Forty-seven cases in which congenital dilatation of the biliary tract was associated with carcinoma were found in the world literature and analyzed. The association of carcinoma with congenital biliary ductal dilatation was found to be higher than previously recognized. Carcinoma may arise in any cystic portion, extrahepatic or intrahepatic. If technically safe and feasible, primary excision of the choledochal cyst is advisable, to prevent the risk of later malignant change in the unexcised cyst.

Adenocarcinoma, Papillary↗