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Biomedical subjects

F L Peeters

Publications and source records attributed to F L Peeters.

At least 19 recordsLinked to original sources
PubMed1995

Giant intracranial mucocele.

A 21-year-old man was admitted to hospital because of recent anosmia and liquorrhoea. He also complained of moderate headache and concentration problems in the past few years. On CT scan and MRI scans a big subfrontal process was seen, partially solid and partially cystic. Neurosurgical and histological findings proved that the lesion was an osteoma of the anterior skull base, concomitant with an intradurally extending mucocele.

Adult↗
PubMed1995

Trigeminal neuropathy: evaluation with MR imaging.

Neuropathy of the trigeminal nerve can involve its full course, from its nuclei in the brain stem to its peripheral branches. The nerve can be divided into four segments--brain stem, cistern, the Meckel cave and cavernous sinus, and extracranial--and consideration of the pathologic entities by these locations simplifies the differential diagnosis. Multiple sclerosis, infarct, and glioma are the most common abnormalities in the brain stem leading to trigeminal neuropathy. The most common cisternal cause is neurovascular compression, followed by acoustic and trigeminal schwannomas, meningiomas, epidermoid cysts, lipomas, and metastases. Trigeminal neuropathy arising from the Meckel cave and cavernous sinus is frequently due to meningiomas, trigeminal schwannomas, epidermoid cysts, metastases, pituitary adenomas, and aneurysms. Malignant tumors, which may demonstrate perineural tumor spread, are the most common extracranial cause. Because the clinical findings do not permit accurate lesion localization, magnetic resonance imaging must be used to visualize the entire course of the fifth cranial nerve. The standard study should include T2-weighted images of the whole brain and high-resolution axial and coronal T1-weighted images of the skull base obtained with and without contrast material enhancement.

Adult↗
PubMed1993

[Value of an electroencephalogram in a patient with transient neurological symptoms].

A seven year old boy had several episodes of dysfunction of the left hemisphere. The only sign on physical examination was a very slight facial asymmetry on the right side. The CT scan with and without contrast enhancement was normal. Because of a marked asymmetry of the EEG, duplex scan examination of the carotid arteries was carried out; it showed a flow disturbance of the left carotid artery. Angiography showed a narrowing of the supraclinoidal portion of the internal carotid artery which was considered to be due to angiitis. As the boy was known to have bronchitis and eczema and the blood tests showed a marked increase of eosinophil cells, he was treated with corticosteroids. At follow-up after three months the EEG and the duplex scan were normal. There had been no TIAs since the start of the treatment.

Carotid Artery, Internal↗
PubMed1991

Intradiploic epidermoid cysts of the bony orbit.

Epidermoid cysts originating within the diploic space of the bony orbit are rare. The authors retrospectively studied four patients with an intradiploic epidermoid cyst of the orbital bones to investigate the clinical and the computed tomographic (CT) findings. The clinical presentation was dependent on the location of the slowly expanding epidermoid cyst. The sphenoid bone was involved in three patients and the frontal bone in one patient. Proptosis caused by intraorbital extension of the mass was the most common presenting sign. The findings on high-resolution CT scans appeared to be specific for intradiploic epidermoid cysts. The typical sclerotic margin, which is diagnostic of intradiploic epidermoid cysts, can be demonstrated by CT scans with a bone window setting.

Adolescent↗
PubMed1991

Screening for unruptured familial intracranial aneurysms: subarachnoid hemorrhage 2 years after angiography negative for aneurysms.

The screening of asymptomatic individuals in families with intracranial aneurysms has been advocated to detect unruptured aneurysms before a major hemorrhage occurs. We report a 39-year-old male member of a large Dutch family, with a documented history of intracranial aneurysms, who suffered a subarachnoid hemorrhage 2 years after cerebral digital subtraction angiography using intravenously administered contrast medium showed no abnormalities. Conventional arteriography demonstrated three intracranial aneurysms measuring 3 x 3 mm. Potential alternative screening procedures are discussed.

Adult↗
PubMed1991

Treatment of solitary arteriovenous fistulas.

Four patients with a solitary arteriovenous fistula were treated by transvascular balloon embolization technique, which resulted in complete fistula closure in three patients and partial closure in one. There were two vertebral arteriovenous fistulas, one peroneal arteriovenous fistula, and one radial arteriovenous fistula. The first two fistulas were spontaneous, the other two were traumatic. The only partial occlusion of the peroneal fistula was, in our opinion, due to a technical failure, the balloon was inflated slightly proximal to the fistular orificium instead of in the orificium itself. There were no complications, and there was no morbidity. In our opinion transvascular balloon embolization technique is the treatment of choice for solitary arteriovenous fistulas.

Adolescent↗
PubMed1989

[Direct arteriovenous fistula in the neck: one of the causes of tinnitus].

The most frequent symptom of an arteriovenous fistula is a bruit, often audible to the patient himself. The indication for treatment of such fistulae depends on the severity of the symptoms and on the risks of excessive strain on the heart, circulatory insufficiency and haemorrhages. The treatment of choice of direct communications between arteries and veins is detachable balloon occlusion by a transvascular technique rather than surgery. The method is described and three personal cases are reported. There were no complications, and the hospital stay was limited to 2-3 days.

Adolescent↗
PubMed1989

Myelography in patients with acquired immuno deficiency syndrome. Indications and results.

Neurological complications in patients with Acquired Immuno Deficiency Syndrome (AIDS) are frequent and in addition to central nervous system syndromes, involvement of the peripheral nervous system is increasingly seen. We evaluated the indications and results of myelographic examination in six AIDS-patients with signs of peripheral nervous system disease, out of 200 AIDS-patients with neurological complications. Five of these patients had a polyradiculopathy, with proven cytomegalovirus (CMV) infection in four cases. There were two abnormal myelographic examinations with findings of cauda equina nerve root involvement, both in patients with proven CMV-polyradiculopathy. These abnormal findings had no direct therapeutic consequences. Myelography is not essential for establishing the diagnosis, which is based on cerebrospinal fluid (CSF) analysis, but may be indicated to exclude a spinal cord or nerve root compressive lesion.

Acquired Immunodeficiency Syndrome↗
PubMed1985

Detection of basilar artery thrombosis by CT.

A case is presented with distal basilar artery occlusion diagnosed by computed tomography (CT). The normal basilar artery imaged on plain CT scans has an attenuation value not higher than that of whole blood. If the CT attenuation value of the vessel is higher than that of blood, basilar artery occlusion is probably present. In the case presented the cause was traumatic thrombo-embolic occlusion of the basilar artery.

Adult↗
PubMed1983

Treatment of 20 direct carotid-cavernous fistulas.

This review describes the results obtained in the treatment of direct carotid-cavernous fistulas in 20 patients. The fistulas were occluded by intraarterial detachable balloons as described by Serbinenko and later modified by Debrun. The advantage of this method over most others is that it closes the fistula but leaves carotid patency intact. We succeeded in this respect in 15 of our patients. With the exception of an abducens paresis in 1 patient, no irreversible neurological or other complications were caused by the procedure.

Adolescent↗
PubMed1982

Chiasmal syndrome. Ophthalmological and neuro-radiological aspects.

The chiasmal syndrome has distinct ophthalmological features such as visual field loss, optic disc changes, decrease in visual acuity, ocular motor disturbances and exophthalmos. However, the pathological processes in the chiasmal region often give rise to differential diagnostic problems. Before the era of computer tomography (CT) these processes could only be visualized by means of indirect or invasive examination techniques. After introduction of computer tomography these processes could be identified much more easily. The ophthalmological findings are discussed. The most frequent causes of chiasmal syndrome are demonstrated on CT scan. The neuroradiological differential diagnosis of an enlarged sella turcica is given.

Adenoma↗