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Ophthalmologe. 2005 Mar;102(3):279-85.

[Retinal vein branch occlusion and palsy of the N. abducens in protein S deficiency].

[Article in German]

Author information

1
Gemeinschaftspraxis der Augenärzte im Rudolf-Virchow-Arztehaus, Salzgitter.

Abstract

BACKGROUND:

Protein S deficiency, which exists in 0.7% of the population, is a risk factor for retinal vein branch occlusions and is inherited in an autosomal dominant manner.

METHODS:

A genealogical study was carried out on three generations of one family who exhibited different venous occlusions and subsequent complications.

RESULTS:

Four members of the family, spanning three generations, suffered from complications of venous thrombosis. In the first generation a great uncle died of complications from a deep leg venous thrombosis. In the second generation, the mother underwent a venous branch thrombosis at the age of 41 with a protein S activity of 18%. Subsequently, a palsy of the N. abducens developed with multiple cerebral lesions (presumably post-thrombotic) in the MRI. Fluorescein angiography showed a typical picture of a venous branch occlusion which had been treated by laser. In the third generation, the 16-year-old daughter developed iliac venous thrombosis and a pulmonary embolism with a protein S activity of 0%. The fluorescein angiography showed distinctively engorged veins. A 28-year-old daughter, with a protein S activity of 16%, remained asymptomatic, although fluorescein angiography demonstrated engorged veins. Protein C activity and APC resistance of all family members were normal. The chromosomal analysis of the family members revealed no morphological aberrations.

CONCLUSION:

Protein S deficiency increases the risk of congenital thrombosis in young and middle-aged heterozygous individuals.

PMID:
15138794
DOI:
10.1007/s00347-004-1032-2
[Indexed for MEDLINE]

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