若年者の原発性アルドステロン症にみられた網膜中心静脈分枝閉塞症の1例

Branch retinal vein occlusion developed in a young adult with primary aldosteronism

　29歳の女性の片眼に網膜中心静脈分枝閉塞症を認め，全身疾患として，原発性アルドステロン症が見出された．本例での網膜中心静脈分枝閉塞症の発症に関して，原発性アルドステロン症による高血圧と，上耳側静脈第2分枝が分枝した直後で動脈と交叉しているという局所的因子が原因となっていたことが考えられた．

A 29-year-old female presented with branch retinal vein occlusion in her left eye. The occlusion occurred at the arteriovenous crossing along the superior temporal vein, just distal to the first bifur-cation. There were minimum findings suggestive of hypertensive retinopathy or arteriosclerosis. Other ocular findings were within normal limits.

The patient had been hypertensive and undertreatment for the past 2 years. She manifested hypokalemia and was diagnosed as primary aldos-teronism.

Branch retinal vein occlusion is a rare occurrence in subjects under 40 years of age. We presumed that the primary aldosteronism and systemic hyperten-sion was causatively related with disturbed blood flow at the site of arteriovenous crossing and result-ed in branch retinal vein occlusion.

Rinsho Ganka (Jpn J Clin Ophthalmol) 42(1) : 61-64, 1988