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Biomedical subjects

A R Wattendorff

Publications and source records attributed to A R Wattendorff.

10 recordsLinked to original sources

Bilateral horizontal gaze paralysis due to pontine hemorrhage. A case report.

In a case of bilateral horizontal gaze paralysis, vertical gaze was clinically intact but eye movement recordings demonstrated a transient reduction of vertical saccadic velocities. Horizontal caloric vestibulo-ocular responses were absent. CT scanning and NMR imaging showed a hematoma in the median pontine tegmentum. This case provides additional evidence that vertical and horizontal saccade genesis may be independent of caudal paramedian pontine reticular formation lesions.

Aged

Thyroid crisis presenting as coma.

Coma is a rare complication of thyrotoxicosis. A patient with coma due to a thyroid crisis is reported. The EEG showed extremely slow and low voltage activity, which gradually returned to normal. Coma as a presenting symptom of thyroid crisis has not been reported before.

Adult

Paroxysmal kinesigenic choreoathetosis and abnormal contingent negative variation. A case report.

We treated a patient suffering from paroxysmal kinesigenic choreoathetosis (PKC). The etiology and pathophysiologic mechanism of this rare movement disorder are unclear. Like other patients with PKC, our patient experienced attacks more frequently when making anticipated movements. Because anticipation plays an important role in the genesis of the contingent negative variation (CNV), we investigated the CNV in our patient. One of the components of the CNV, the slow negative wave (SNW), repeatedly showed a remarkable enhancement compared with that of controls. After institution of phenytoin sodium therapy, the attacks of PKC subsided and the SNW amplitude came within the range of control values. There may be a relationship between PKC and the abnormal CNV.

Adolescent

[Migraine].

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Adolescent

Familial cerebral amyloid angiopathy presenting as recurrent cerebral haemorrhage.

Eleven patients belonging to two generations of a Dutch family with cerebral and cerebellar haemorrhage, haemorrhagic infarction and infarction are described. Their ages varied from 44 to 58 years. The principal clinical characteristics was recurring cerebral haemorrhages, sometimes preceded by a history of migrainous headaches or mental changes. In 4 of the 6 autopsied cases, old and new multiple cerebral haemorrhagic infarcts and infarcts were found, in one case a single cerebral haemorrhage and in another a cerebellar haemorrhage. In 5 cases this resulted in secondary subarachnoid haemorrhage. In one case the infarcts were only slightly haemorrhagic and did not result in subarachnoid haemorrhage. This patient presented as dementia. Microscopically, in these 6 cases and in one biopsy specimen hyaline thickening of the walls of cortical arterioles was found. The arteries of the arachnoid showed marked tortuosity, concentric proliferation, and focal hyalinization of the walls. Amyloid was found in the hyalinized vessels in 5 cases, but not outside the central nervous system. We believe that we are dealing with an inherited disorder with an autosomal dominated mode of inheritance, in which microangiopathy leads to cerebral haemorrhage and (haemorrhagic) infarction. It seems likely that amyloidosis underlies the angiopathy, and that this family suffers from a condition similar to the one described by Gudmundsson in 1972.

Adult

Chronic myeloid leukemia in myasthenia gravis after long-term treatment with 6-mercaptopurine.

A woman with myasthenia gravis and a thymoma did not respond sufficiently to thymectomy. She was treated with 6-mercaptopurine. Withdrawal of this treatment was several times followed by an aggravation of myasthenic symptoms. After more than 12 1/2 years treatment she developed Ph1-positive chronic myeloid leukemia (CML). No other case of CML following immunosuppressive treatment has been described. Because the therapeutic agent is potentially leukemogenic, the possibility cannot be definitely excluded that the development of CML is not a mere coincidence.

Chromosomes, Human, 21-22 and Y

Acute myelopathy caused by fibrocartilaginous emboli.

Fibrocartilaginous embolism of the spinal cord has been reported in only 17 cases. We describe three new cases, all seen within a year, of infarction of the spinal cord by fibrocartilaginous emboli in the ramifications of the anterior spinal artery. These emboli probably originate from degenerated intervertebral disks, but full understanding of the pathogenesis is still lacking. The disease has been found more frequently in dogs. Because the pathologist is not likely to attempt to demonstrate the condition unless the clinician has proposed this diagnosis, the true frequency will be known only when the clinical picture is widely recognized.

Acute Disease

[Headache].

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Headache