PubMed Health⌕ Search

Biomedical subjects

J H Nehen

Publications and source records attributed to J H Nehen.

6 recordsLinked to original sources
PubMed1996

Cranio-orbital teratoma.

A new-born baby presented with a large, rapidly growing tumour. The tumour involved the right orbit, the anterior half of the right intracranial space and extended through the skull of the temporal region. The proptotic eye ruptured due to exposure. The tumour was extirpated when the patient was 12 days old. A large recurrence was extirpated two months later. The tumour was firmly bound to the medial aspect of the superior orbital fissure which probably was the location of origin of the tumour. Based on the size of the intracranial-and the orbital part of the tumour, it was classified as a secondary orbital teratoma. The tumour was macroscopically composed of cystic and solid areas. Microscopically it was seen to be a benign teratoma with tissue from all three germinal layers.

Brain Neoplasms↗
PubMed1988

Amaurosis fugax in a Danish community: a prospective study.

A prospective study of amaurosis fugax was carried out in a Danish community (population 481,000); case ascertainment was based on the collaboration of practicing ophthalmologists and general practitioners. Over a 3-year period we registered 131 cases; the annual incidence of "first amaurosis fugax episodes coming to medical attention" was 8.6 and 6.2 per 100,000 population for men and women, respectively. On the basis of a comparison of the age-incidence curves for cerebral and retinal ischemic attacks, the "true" incidence of amaurosis fugax is estimated to be approximately 14/100,000/yr, or 25-30% of the reported incidence of transient ischemic attacks. Clinical and/or radiologic signs of a carotid lesion on the appropriate side were present in 56% of the patients, and an additional 27% had symptoms or signs of other organic cardiovascular disorders. Forty-three (68%) of the 63 patients who underwent arteriography had an atheromatous lesion apparently amenable to carotid endarterectomy. In spite of the case-finding procedures employed in the study, cases of amaurosis fugax suitable for carotid surgery were thus ascertained at a rate of only 3/100,000/yr. This suggests that surgical treatment of patients with retinal ischemic attacks is of minor importance as a preventive measure against stroke in the community.

Adult↗
PubMed1979

Primary localized orbital amyloidosis.

The present paper reports a case of primary localized amyloid tumour of the orbit in a 68-year-old woman in whom myasthenia gravis had been diagnosed 33 years before. An amyloid tumour with this location is very rare, and up to the present time only 13 cases have been recorded in the literature. The reported orbital amyloid tumour revealed a considerable accumulation of activity at orbital scintigraphy with 99Tc(m) and, compared with the conventional pseudotumours, a distinct rise in density at computed tomography after intravenous infusion of iodized contrast medium.

Aged↗