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Biomedical subjects

O Heiskanen

Publications and source records attributed to O Heiskanen.

At least 55 records · Page 3Linked to original sources
PubMed1978

The management and prognosis of gliomas of the optic pathways in children.

A follow-up study was made of 24 children with gliomas of the optic pathways. In gliomas restricted to one optic nerve, total excision should be performed. The prognosis is excellent. Radiotherapy is not indicated. In gliomas of the anterior chiasma a biopsy should be taken; occasionally partial removal is indicated. The prognosis is good. Radiotherapy is indicated only if the follow-up shows a progression in the visual signs. In most cases the growth of the tumour seems to be arrested. The vision remains stable, and most patients have a useful degree of vision in at least one eye. In gliomas of the posterior chiasma with hypothalamic signs the prognosis is poor. A biopsy and radiotherapy are indicated. Occasionally, long remissions are seen.

Adolescent↗
PubMed1977

Intracranial tumors of children.

A report is made on 323 intracranial tumors of children reported to the Cancer Registry in Finland in 1958-1967. The most common sites were the cerebellum, cerebral hemispheres and brain stem. 54% of the tumors were in the posterior fossa. The most common histological types were medulloblastoma, cerebellar astrocytoma and ependymoma. The incidence on the basis of this series was 2.4/10(5)/y. The general outlook for intracranial tumors in childhood was not very good. After a follow-up time of from 5 to 16 years, 31% of the patients were alive. The best prognosis was in cerebellar astrocytomas and cerebral spongioblastomas. In some tumors of the thalamus and third ventricle remissions for over 10 years were achieved by shunt and radiotherapy alone.

Adolescent↗
PubMed1975

Chronic subdural hematoma in adults. Influence of patient's age on symptoms, signs, and thickness of hematoma.

The relationship of age to clinical and pathological findings was analyzed in 109 adult patients operated on because of chronic subdural hematoma. A well-formed membrane on the inner and outer surface of the hematoma was used as the criterion for chronicity of the hematoma. Younger patients had more evidence of increased intracranial pressure; older patients had more evidence of mental deterioration and pyramidal tract lesions. The interval from trauma to operation was shorter in the young patients. The thickness of the hematoma as measured from angiograms increased with the age of the patient. The cause of this difference is discussed.

Adult↗
PubMed1975

Epidural hematoma.

A report is given on 80 consecutive patients with epidural hematoma. The mortality was 16%. The rate of disability among the survivors was 20%. The classical clinical course with a lucid interval was seen in five patients only. The classical neurological signs of an epidural hematoma, contralateral hemiparesis, and ipsilateral third nerve palsy were seen in 15 patients, i.e., 19%. The main factors associated with increased mortality and morbidity were concomitant brain injury, rapid development of the hematoma and unconsciousness at the time of operation. In almost half of the fatal and disabled cases there was a delay in the diagnosis and operation. Consequently better results are possible with better organization of the supervision and treatment of brain injured patients.

Adolescent↗