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Biomedical subjects

W Liebert

Publications and source records attributed to W Liebert.

15 recordsLinked to original sources
PubMed1994

[Surgical management of pituitary adenomas by transsphenoidal approach].

In the years 1976-1993 we have performed 90 transsphenoidal approaches for pituitary adenomas. This paper presents a detail report concerning 23 cases, operated in the last 2 years, with CT and NMR documentation. A preoperative visual deficit was very common in this group of patients. In the postoperative period the dramatic improvement of the vision was observed in 86% of cases. In our opinion the transphenoidal approach is very useful for the operation of the tumors with suprasellar expansion.

Adenoma↗
PubMed1992

[Clinical analysis of 27 cases of primary lymphoma of the central nervous system].

Clinical analysis of 27 patients with primary central nervous system lymphoma--Out of 4397 patients with intracranial neoplasms treated in the Department of Neurosurgery Medical Academy in Poznań between years 1956-1990, 27 patients i.e. 0.6% had primary central nervous system lymphoma. The patients age ranged from 15 to 63 years. In most patients the tumour was located in the temporo-parietal region. All patients were treated surgically, and then some received radio and/or chemotherapy. In spite of combined therapy the results of treatment are unsatisfactory, the median survival time is between 2 and 4 months.

Adolescent↗
PubMed1989

[Multifocal oligodendroglioma. A case report].

A case of multifocal oligodendroglioma was described in a 51-year-old woman. Tumours were located in the parietal lobe of the right cerebral hemisphere and in the frontal lobe of the left cerebral hemisphere. Multifocal character and type of the neoplasm were determined by using computerized+ tomography and fine-needle biopsy with the patient alive. Histologic examinations of the surgical and autopsy materials confirmed multifocal development of oligodendroglioma.

Biopsy, Needle↗
PubMed1980

[Evaluation of n-butyl 2-cyanoacrylate for the reconstruction of the arteries in dogs. II. Morphological evaluation].

The microscopic examinations of 56 arteries anastomosed or dressed by 2-cyanoacrylate n-butyl tissue adhesive revealed prolonged inflammation of a foreign body type. The reaction was noticeable even after 93 days. Small parts of adhesive on the arterial surface were surrounded by fibromatosed granulation. However, inside some vessels parietal clots caused by an inaccurate anastomosis and too thick adhesive layer, were found. The long lasting inflammation doesn't eliminate the usefulness of the adhesive as remedy for the facilitation of the small vessels anastomosis.

Animals↗
PubMed1980

[Evaluation of n=butyl 2-cyanoacrylate for the reconstruction of the arteries in dogs. I. Clinical evaluation].

The results of the experiments with 2-cyanoacrylate n-butyl adhesive used in arterial reconstruction at dog's were presented. The operations were performed on 56 carotid or femoral arteries of 14 dogs. Longitudinal 5-6 mm long arterial incisions and transversal incisions of the half of the circumference were treated with tissue adhesive only. Transsected arteries were anastomosed both with sutures and tissue adhesive applying the invagination method or end-to-end anastomosis. For 32 arteries with partial injury normal patency was stated, both in early and subsequent period after the operation in 32 cases. Partial occlusion was observed in 5 cases only. When the investigation method was applied to arterial anastomosis, the occlusion appeared in all 14 cases. For 10 arteries anastomosed by the end-to-end method, partial or complete occlusion appeared in 3 cases. The investigations prove that in slight arterial injuries the application of sutures and tissue adhesive, and in some cases exclusively adhesives, ensures the sufficient tightness and patency, and simplifies the surgical technique.

Animals↗
PubMedDate not supplied

[Congenital carotid-sinus cervical-sagittal fistula].

The reported case presented an unusual form of congenital carotid-sagittal communication. Clinical findings included: except vascular murmur over the skull a characteristic syndrome consisting of of epleptic seizures, hemiparesis, aphasia and dementia. The communication was excised radically in its central and peripheral parts. The segment corresponding to the main trunk of the middle cerebral artery was narrowed by means of bipolar coagulation. Postoperative angiography and disappearance of most neurological signs after the operation showed that the chronically ischaemic parts of the brain resumed their functions.

Aphasia↗
PubMedDate not supplied

[Central nervous system trauma in children. Clinical analysis of 782 cases].

A series of consecutive 782 children with severe head trauma and spinal cord injury who were managed surgically or conservatively in the Department of Neurosurgery, Medical Academy in Poznań during 31 years was analysed. The clinical history, severity of injury (scales AIS, ISS), outcome of head and spinal cord injuries are reviewed. Factors important in predicting a poor outcome included the presence of brainstem contusion, intracranial haematomas and complete and severe partial spinal cord lesions.

Adolescent↗
PubMedDate not supplied

[Factors contributing to recurrence of intracranial meningiomas and indications to postoperative radiotherapy].

The incidence of various histological subtypes of intracranial meningiomas and recurrences was examined in 565 patients with surgically treated meningiomas in the Department of Neurosurgery in Poznań, between 1960-1992. Approximately 60% of the tumours were located on the convexity (39.5%) and parasagitally (23%). Histological diagnosis in 88% of the patients was endotheliomatous (61%), fibroblastic (17%) and angiomatous (10%) meningiomas. The incidence of recurrence after complete removal of the meningioma was 7% for all sites, but much higher after partial removal. Among the recurrences, there was a higher degree of malignant and angiomatous subtypes. Surgery is the accepted form of treatment for meningiomas but it may prove insufficient as the only method of therapy in certain situations. Implications for the potential role of postoperative radiation therapy are discussed.

Adolescent↗
PubMedDate not supplied

[Aneurysm situated within the optic nerve].

A case of carotid-ophthalmic aneurysm of unusual location in the optic nerve is reported. The development of the disease was sudden: pain in the eye was followed by unilaternal blindness and manifestations of subarachnoid haemorrhage. The optic nerve was dilated balloon-like, cyanotic and vigorously pulsating. It was divided longitudinally and the aneurysmatic sac was exposed from the nerve. A vascular clip was put on its peduncle communicating with the cervico-ophthalmic portion of internal carotid artery. Despite preserved patency of the ophthalmic artery and partial continuity of the optic nerve, the vision of the eye didn't improve.

Blindness↗