Search PubMed⌕ Search

Biomedical subjects

S Waga

Publications and source records attributed to S Waga.

At least 181 records · Page 10Linked to original sources
PubMed1981

Intratumoral hemorrhage after a ventriculoperitoneal shunting procedure.

Ventriculoperitoneal shunting has been accepted as a safe and useful preliminary procedure that lowers the mortality and morbidity of definitive surgery for tumors causing obstructive hydrocephalus. We are reporting four patients with intratumoral hemorrhage as a complication of shunting. The hemorrhage was massive and fatal in two patients, one with an unverified pineal tumor and the other with a malignant astrocytoma of the thalamus. The hemorrhage was small and limited in the other two patients, one with a glioblastoma of the thalamus and the other with a cerebellar astrocytoma. On the basis of this experience, we conclude that the possibility of intratumoral hemorrhage should be taken into consideration when planning the preoperative management of obstructive hydrocephalus caused by brain tumors. It is possible that ventricular decompression may result in rapid motion and distortion of the intracranial structures and a sudden imbalance between intracranial and intratumoral pressures, leading to vascular insufficiency, congestion, and then hemorrhage within the tumor.

Adolescent↗
PubMed1981

Monocyte function in idiopathic nephrotic syndrome in childhood.

The monocyte function in 2-15 year old patients with idiopathic nephrotic syndrome (INS) in childhood was studied in reference to the phagocytosis of sensitized red blood cells and NBT reduction. The monocyte function was found to be increased in fresh cases of INS. In the case of refractory INS not responding to steroid treatment, the monocyte function was normal or tended to be low.

Adolescent↗
PubMed1980

Long-term experiences with labetalol.

Labetalol has been used in 83 patients with severe hypertension resistant to a wide number of drugs. Adequate blood pressure control was achieved in 50 patients. Seven patients with a response in blood pressure had administration of the drug ceased because of side effects. Twenty-two of these resistant patients had little fall in blood pressure. Labetalol can be used safely in severe resistant hypertension and is indicated when a thiazide and beta-blocking drug has failed to reduce blood pressure.

Adult↗
PubMed1979

Craniopharyngioma with midbrain involvement.

An adult patient had a cranlopharyngloma that involved and displaced the midportion of the midbrain, producing Weber's syndrome. Oculomotor paresis in cranlopharyngloma is not always due to parasellar involvement but may be due to midbrain involvement.

Adult↗
PubMed1979

Reversibility of Parinaud syndrome in thalamic hemorrhage.

Parinaud syndrome, associated with a left thalamic hemorrhage, disappeared completely in a 57-year-old woman after ventriculoperitoneal shunt. The syndrome may be attributed to increased intracranial pressure owing to mass effect on the pretectal region and tectum, or to tightness in the incisura causing hydrocephalus secondary to aqueduct compression. The lesions responsible for the syndrome may not be irreversible.

Cerebral Hemorrhage↗
PubMed1979

Chondroma of the spine in a newborn infant: case report.

We report a newborn infant with a chondroma of the spine covered by a large lipoma. The child had no neurological deficit. Presenting as a tumor of the back, the chondroma was successfully excised. A review of the pertinent literature emphasizes the rarity of this lesion.

Chondroma↗
PubMed1979

Dural-cortical anastomosis in pial arteriovenous malformation. Case report.

A patient is reported with a purely pial arteriovenous malformation (AVM) supplied from the posterior parietal artery. The prominent middle meningeal artery contributed to opacification of the angular branches distal to the AVM, but did not contribute to the AVM. After total removal of the AVM, the angular branches became opacified from the middle cerebral artery. Review of the literature suggests that hypertrophied dural arteries which do not contribute to the AVM's but which do opacify the cortical branches distal to the AVM's are rare.

Adult↗
PubMed1979

Aneurysm developing on the infundibular widening of the posterior communicating artery.

A patient had a subarachnoid hemorrhage in 1969. Four-vessel angiography demonstrated an infundibular widening of the posterior communicating artery alone. In 1978, nine years later, angiography demonstrated that the infundibular widening had enlarged and developed into an aneurysm, though unruptured. Another aneurysm of the anterior communicating artery was also found. Both were confirmed at operation and clipped. Review of the pertinent literature emphasizes that the infundibular widening may be preaneurysmal.

Adult↗
PubMed1979

Trigeminal neuralgia: compression of the trigeminal nerve by an elongated and dilated basilar artery.

A patient with trigeminal neuralgia caused by direct compression by an elongated basilar artery of the 5th nerve at the zone of entry of its sensory root into the pons is presented. Rhizotomy of the portio major is a treatment of choice in such a case instead of simple microsurgical decompression. The elongated basilar artery is very firm and not readily movable with manipulation.

Basilar Artery↗
PubMed1979

Calcified subdural hematoma in the elderly.

A 71-year-old patient with asymptomatic calcified subdural hematoma is presented. Review of the pertinent literature indicates that the lesion should be left untreated when incidentally found or not associated with progressive neurological symptoms and signs.

Age Factors↗
PubMed1979

[Large abdominal pseudocyst as a complication of ventriculoperitoneal shunt--diagnosis by ultrasonography and whole body CT scan (author's transl)].

We report a case in which a large abdominal pseudocyst developed following a ventriculo-peritoneal shunt (V-P shunt) for hydrocephalus due to pineal germinoma. A 24-year-old man had undergone a V-P shunt and radiotheraphy for unbiopsied posterior third ventricle tumor. Four years after operation he was readmitted because of double vision, conjugate upward gaze palsy and a large abdominal mass. Preoperative diagnosis of abdominal pseudocyst was made by abdominal computed tomography and ultrasonotomography. The shunt tube was clearly deomonstrated in the cavity by computed tomography. It is suggested that, in a patient suspicious of having abdominal pseudocyst who developed abdominal symptoms and signs following V-P shunt, abdominal computed tomography and/or ultrasonotomography provide a definitive diagnosis of this entity.

Abdomen↗
PubMed1979

Intracranial germinomas: treatment and results.

Eighty-nine patients with intracranial germinomas were treated from 1954 through 1975. Radiotherapy was given in 62 patients. The five-year survival rate was 61% and the ten-year survival rate was 55%. In unbiopsied patients the five-year survival rate was 66% and the ten-year survival rate was 59%, whereas in biopsied ones it was 56% and 47%, respectively. Prophylactic irradiation to the spinal axis in the presence of germinoma cells in the cerebrospinal fluid may not be justified.

Adolescent↗