A report of 25 cases of neurosyphilis seen in University Hospital, Kuala Lumpur since 1970. Classical form of the disease still constitute the majority of the patients with often long delay before diagnosis.
A retrospective study of 62 cases of myasthenia gravis in Malaysia is reviewed. It shows an apparent prevalence among the ethnic Chinese compared with the Malay and Indian. The incidence of male and female and their average age of onset are similar. Unlike the western figure, among those with age of onset less than 20 years. both sexes are equally affected. The symptomatology, morbidity and mortality and incidence of thymoma are the same as those
reported elsewhere.
A patient with organophosphate poisoning who survived the acute phase and subsequently developed delayed neuropathy is presented. The features of this form of delayed neuropathy are described and the implications in our local context discussed.
Thirty-four patients with intracranial arteriovenous malformations seen in the University Hospital, Kuala Lumpur, over a is-year period were reviewed. A VM was found to be more common in young, male patients with preponderance Chinese origin. The advent of the Cl-scan has increased the detection of small A VMs and intracerebral haematomas proportionally. The majority of the lesions were situated in the posterior half of the brain unlike the distributions in patients in the West and in Singapore. On the other hand, most of the intracranial bleeding were subarachnoid haemorrhage; a presentation similar to the western community, but unlike that reported from Singapore. The treatment policy is not unlike the western community with good results in 82% of patients selected for surgery.
A retrospective prospective study of 84 cases of subarachnoid haemorrhage, 24 intracranial aneurysms and 18 arteriovenous malformations (AVM's) treated in the University Hospital, Kuala Lumpur, during the post CT-scan era was carried out to verify the relative frequencies of these clinical entities in the Malaysian population. Our results show that aneurysms are commoner than arteriovenous malformations as a cause of subarachnoid haemorrhage and also the most frequent as a whole, thus refuting the previous claims that AVM's are 4 to 10 times more common than aneurysms in this part of the world. Of interest was the internal carotid artery aneurysms accounted for half of the anterior circulation aneurysms and that 2/3 of the AVM's presented with intracranial haemorrhage.
Complicated migraine is not well known. It is associated with transient and protean sensory and motor
nenrological features although disturbance of mood, affect and psyche has also been described.
This paper is based on a study of ten patients suffering from complicated migraine and attempt is made
to describe various neurological symptoms and signs.
It becomes apparent from this study that there arc diverse manifestations of this interesting disorder.
Furthermore complicated migraine seems to affect a younger age group and there may not be any
family history of migraine. In most cases the nenrological symptoms precede the attacks of headaches.
The nenrological deficit may persist after longer periods. Initially, the attacks arc usnally followed by
complete recovery, with repeated attacks there may be residual neurological deficit. Though the exact
aetiology of the migraine remains unknown, it has been suggested that it is due to spasm or oedema of
cerebral vascular system. If the vessels involved are the carotid artery system, the symptoms and signs
obviously would be due to involvement of cerebral hemisphere, whereas affection of basilar artery
would produce signs and symptoms of cerebellar or brain stem deficiency.
At times it may be extremely difficult to differentiate between a typical attack of migraine and headache
due to an underlying pathology e.g. intracranial angioma or space occupying lesions, which may
require investigations such as angiography. The angiography may prove fruitless and cause deterioration
in neurological signs. A careful follow-up should be planned for cases with complicated migraine
to exclude any underlying pathology.
Moyamoya disease is a rare cause of young strokes. The definitive diagnosis of moyamayo disease is made by cerebral angiography. We report two cases of moyamoya disease in Malaysia.
The neuroleptic malignant syndrome (NMS) is a potentially fatal complication of antipsychotic therapy. A retrospective study of nine patients seen over six years at the University Hospital, Kuala Lumpur (UHKL), is described. The estimated annualised incidence was 1.2 per 1000 in-patients with psychosis. No ethnic difference was detected. Clinical features were similar to experiences elsewhere, with wide variability seen in the severity of illness. The neuroleptic drugs implicated were haloperidol, trifluoperazine, chlorpromazine, fluphenazine and clopenthixol. Treatment consisted of withdrawal of offending drugs and supportive measures. Specific therapy was given to five patients. There was one death. At follow-up no deterioration was detected. A different neuroleptic drug was successfully re-introduced in four patients. In view of the wide usage of major tranquillizers, a high degree of clinical awareness of this serious complication is necessary for early diagnosis to reduce morbidity and mortality.
Demonstration of arrested intracerebral blood flow is the ultimate evidence of brain death. Computerized radionuclide cerebral flow study was done on 18 patients diagnosed clinically as brain dead. Correlation was made with clinical neurophysiological and EEG findings. The criteria for diagnosis of arrested intracerebral perfusion using radionuclide flow study were: non-visualization of blood flow activity in the intracranial arteries during the arterial phase, diffused cerebral activity during the capillary phase and non-filling of venous sinuses during the venous phase; visualization of typical 'hot nasal' activity; the time activity curve over the cerebral hemispheres lacks a bolus effect and instead shows a delayed gradual rise of activity. These features are pathognomonic of brain tamponade.
Arrested intracranial circulation was seen in 16 patients (ten had electrocerebral silence; one had extremely abnormal EEG with small voltage activity and five had no EEG done). In the remaining two patients, some cerebral blood flow was demonstrated (one had no definite cerebral activity and the other had diffused EEG activity).
Radionuclide cerebral flow study is a very sensitive, accurate, safe, simple, rapid and non-invasive modality in confirming brain death and is especially useful in patients on "brain-protection" regime, in hypothermia or in certain metabolic states where diagnosis based on clinical and EEG criteria is difficult. EEG need not be a required procedure once brain death is established by the demonstration of arrested intracranial circulation.