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Biomedical subjects

S Waga

Publications and source records attributed to S Waga.

At least 199 records · Page 11Linked to original sources
PubMed1979

[Vitreous hemorrhage as a complication of subarachnoid hemorrhage (Terson's syndrome) (author's transl)].

We represent a case of vitreous hemorrhage due to subarachnoid hemorrhage from a ruptured aneurysm of the right vertebral artery to draw attention to this complication. A 53-year-old man was admitted to our hospital because of generalized headache and reduced visual acuity of both eyes. On admission the patient was alert and there were moderate nuchal stiffness and mild symmetrical hyperreflexia in the extremities. Ophthalmological consultation revealed bilateral retinal, subhyaloid and vitreous hemorrhages. Four-vessel angiography demonstrated an aneurysm of the right vertebral artery. At operation, it became clear that the aneurysm was a dissecting one. The vertebral artery was clipped at the most proximal intracranial portion. Postoperative course was smooth and uneventful except deteriorated visual acuity. His visual acuity deteriorated continuously to hand movements 18 days after subarachnoid hemorrhage. His visual acuity, however, gradually improved without specific treatment. At the time of this writing, his visual acuity is 1.0 on both sides. Vitreous hemorrhage is a rare complication following a reptured aneurysm. Pertinent literature concerning fundal hemorrhage, especially vitreous hemorrhage, associated with subarachnoid hemorrhage suggests that it may occur as a result of sudden increase of intracranial pressure.

Eye Diseases↗
PubMed1978

Dissecting aneurysm of the vertebral artery.

A patient presented with a subarachnoid hemorrhage associated with a vitreous hemorrhage. Angiography was first interpreted as revealed a saccular aneurysm at the junction of the vertebral and posterior inferior cerebellar arteries. At operation it was evident that the aneurysm was a dissecting one of the vertebral artery. The proximal portion of the intracranial vertebral artery was clipped. The patient survived without any attributable neurological deficit. A review of the relevant literature is presented.

Aortic Dissection↗
PubMed1977

Ossifying fibroma of the occipital bone.

A rare ossifying fibroma in the occipital bone is described, and the available literature reviewed. The rapid growth seen in this case was remarkable and led us to believe this was a malignant osteogenic tumor. Full knowledge and the correct diagnosis of ossifying fibroma should have prevented an unnecessarily extensive operation for this benign lesion.

Child↗
PubMed1977

Dural arteriovenous malformation in the anterior fossa.

A case of dural arteriovenous malformation in the anterior fossa is reported. It first caused a subarachnoid hemorrhage and subsequently an intracerebral hematoma. Pertinent literature is briefly reviewed. Such malformations may be divided into three groups; those involving primarily the basal dura mater of the anterior fossa, the anterior portion of the falx, or the dura mater of the frontal convexity. Principal blood supply comes from the ophthalmic artery with an additional supply from the external carotid system. The treatment of choice is surgical excision with or without artificial embolization of the feeding arteries from the external carotid artery.

Dura Mater↗
PubMed1976

Neurological manifestations of rhabdomyosarcomas in the head and neck in childhood. Neuroradiological study.

Two cases of rhabdomyosarcoma in the head and neck with neurological manifestations are presented. Brain scan demonstrated an apparent area of increased uptake of 99mTc in the tumor. Cerebral angiography revealed a sharply demarcated but rather faint tumor stain. The contributing vessels were hypertrophied branches of the external carotid artery, a dural branch of the internal carotid artery, and branches of the vetebrobasilar systes emphasized because the recent combination of chemotherapy in conjuction with surgery and irradiation seems to be encouraging.

Adolescent↗
PubMed1976

Scalp veins as collateral pathway with parasagittal meningiomas occluding the superior sagittal sinus.

In 3 cases with occlusion of the superior sagittal sinus (SSS) with parasagittal meningiomas, carotid angiography demonstrated scalp veins as an important collateral venous pathway. The authors believe that occlusion of the SSS is best seen in half axial oblique carotid phlebograms under contralateral carotid compression. Direct sinography is time consuming and troublesome. In the presence of scalp veins as important collaterals, strategic consideration for surgical treatment is discussed.

Adult↗
PubMed1976

Radiation-induced meningioma: with review of literature.

A case of tentorial meningioma occurring 12 years after radiation therapy for a verified craniopharyngioma is presented. The pertinent literature is reviewed and it is concluded that irradiation of the brain may be responsible for the late development of intracranial meningiomas, which are less common, however, than sarcomas. A long survival after irradiation, "misregeneration" in the chronic inflammatory processes induced by irradiation, and an immunodeficiency caused by irradiation and other factors, may play some role in developing oncogenesis.

Adult↗
PubMed1975

Sinus pericranii.

Five cases of sinus pericranii are presented, four congenital and one traumatic. All five cases were successfully treated with extirpation and reinforcement with Gelfoam and silk thread over the skull openings. The literature on this rare symptom-complex is reviewed and a new definition of sinus pericranii proposed.

Adult↗
PubMed1975

Warning signs in intracranial aneurysms.

Warning signs preceding major hemorrhage were analyzed in 192 patients with intracranial aneurysms. One hundred and thirteen (59 percent) had warning signs. The average interval between the last warning signs and the major attacks was 16.9 ddays with anterior communicating and anterior cerebral aneurysms, 6 days with middle cerebral aneurysms, and 7.3 days with intradural internal carotid aneurysms. The incidence was much higher in aneurysms (69 percent) and with location of the aneurysms. Early recognition of warning signs may protect patients from the devasting effects of major hemmorhage.

Adult↗
PubMed1975

Teratomas in the suprasellar region: report of five cases.

Five cases of suprasellar teratoma are presented. The characteristic clinical symptoms consist of diabetes insipidus, visual distrubance, hypopituitarism, and occasionally increased intracranial pressure accompanied by mild erosion of the sella turcica and separation of cranial sutures. A suprasellar mass lesion was demonstrated in all four cases examined by carotid angiography, and fine vascularization was found in three. Removal of the tumor is the treatment of choice, but if carcinoma, choriocarcinoma, or germinoma tissues are contained in the tumor, irradiation therapy should follow surgical treatment.

Adolescent↗