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Biomedical subjects

M Copty

Publications and source records attributed to M Copty.

11 recordsLinked to original sources

Intracranial chondroma. Report of two cases and review of the literature.

INTRODUCTION: Chondromas are rare intracranial tumors. The authors present two cases of intracranial intradural chondroma, one originating from the falx cerebri and the other from the dura mater of the convexity. METHOD AND RESULTS: Diagnostic procedures, including magnetic resonance imaging, and surgical findings are described. In both cases, pre-operative diagnosis could have been at least suspected, and the tumor was completely removed, without recurrence after a follow-up of many years. The pathogenesis and pathological findings are discussed, and cases from the literature are reviewed. CONCLUSION: Benign intradural chondroma has a good prognosis, with no recurrence after surgical excision in most cases.

Adult↗

[Early surgery of intracranial aneurysms].

In spite of scientific progress during the last two decades, microsurgery, neuroanesthesiology, and a better knowledge of the pathophysiology of cerebral vasospasm, the outcome of subarachnoid hemorrhage (S.A.H.) patients remains very poor. Each year, 28,000 North Americans are afflicted. Eighteen thousand of these patients will either die or become severely debilitated, a mortality morbidity of 64%. Only one patient out of five may return to the premorbid state. International cooperative studies report that the highest rate of rebleeding occurs during the first 24 hours post S.A.H. There is no rebound phenomenon during the 7th-8th day post S.A.H. Cerebral vasospasm begins during the 2d-4th day post S.A.H. and reaches its peak around the 8th day post bleed. Antifibrinolytics like AMICAR (aminocaproic acid) do not reduce significantly the rebleeding rate. In most of the cases the therapeutic level of these drugs is reached only on the third or fourth day of treatment. Hence antifibrinolytics are inactive during the first crucial seventy two hours. Antifibrinolytics increase the incidence of vasospasm, hydrocephalus, and thromboembolic phenomenon. At Infant Jesus Hospital, Quebec City, S.A.H. patients are operated on early since more than two years. Patients included in this study were admitted between January 1983 and December 1984. One hundred and thirty six patients were operated upon, 22 patients operated on acutely, less than 72 hours post S.A.H. Evaluation of these patients included the Glasgow Coma Scale (G.C.S.), the grade according to Botterell classification, a CT Scan, and angiography. A preoperative evaluation included Botterell classification and G.C.S., a post operative evaluation was performed during the first and seventh post operative days.(ABSTRACT TRUNCATED AT 250 WORDS)

Humans↗

Lateral ventricle plexus papilloma and communicating hydrocephalus.

A choroid plexus papilloma was found in the right lateral ventricle of a five-month-old boy. Though it was associated with an important communicating hydrocephalus, it was seen at operation to be freely mobile and did not directly obstruct the flow of the cerebrospinal fluid. Computerized axial tomography was the most helpful para-clinical investigation for diagnostic purposes, and for follow-up study. Tumor removal alone was sufficient to cure the hydrocephalus, and no shunt was necessary. We feel that this case demonstrates that hyperproduction of CSF is sufficient alone to cause communicating hydrocephalus in patients with choroid plexus papilloma of the lateral ventricle.

Cerebral Ventricle Neoplasms↗

Successful removal of an entirely calcified aneurysm of the vein of Galen.

The authors describe the successful removal of a completely thrombosed and entirely calcified aneurysm of the great vein of Galen in a 45-year-old woman. Computerized axial tomography showed that the center and the periphery of the aneurysm were calcified. The infratentorial supracerebellar approach permitted the removal of the lesion with minimal distortion of the normal anatomy.

Calcinosis↗

The surgical separation of pygopagous twins.

A set of female pygopagous twins was successfully separated. Preparation for the main operative procedure and the surgical anatomy encountered are described in details.

Anal Canal↗

Intranasal meningoencephalocele with recurrent meningitis.

Two patients presented with repeated bouts of meningitis. RISA cisternography established the diagnosis in both cases. An intranasal meningoencephalocele was the cause of these infections. Frontal craniotomy and section of the peduncular connection of the meningoencephalocele and sealing of the bony defect was successfully performed in both cases. Postoperative investigations showed complete cure.

Child↗

Preoperative diagnosis of conjoined roots anomaly with herniated lumbar disks.

Twelve cases of nerve root anomalies encountered during investigation for low back pain and sciatica are presented. Most of these patients had a herniated lumbar intervertebral disk and were operated upon with the preoperative knowledge of an associate nerve root malformation. Three patients were found to have a symptomatic nerve root malformation without disk herniation. These patients were conservatively treated. In all cases we found a constant myelographic sign that is described.

Adult↗

Traumatic suprasellar arachnoid cyst.

The case is reported of a suprasellar archnoidal cyst in a five-year-old boy who developed symptoms of hypothalamic involvement. It appears to have been of traumatic origen. It was operated upon, resulting in a remission of symptoms.

Brain Neoplasms↗

Intracranial dysgerminomas.

We have reported three cases of intracranial dysgerminoma. The origin of these tumors has been controversial for a long time. It is now accepted that they develop from germ cells. The diagnosis is often difficult to confirm because of the varity of signs. If their origin is now accepted, the best way to deal with these lesions is still controversial. They can be macroscopically removed if they are in the pineal region. Such treatment is not possible for suprasellar tumors. Since these tumors can metastasize, radiation should be administered as soon as a pathological diagnosis is obtained. It is our belief that it should be administered to the whole spinal axis.

Adolescent↗