[Syndrome of acute choriocapillaris ischemia in leukemia. Thoughts apropos of a case]. / Syndrome d'ischémie aiguë choriocapillaire au cours d'une leucose. Réflexion à propos d'une observation.

Choriocapillaris occlusion is rare in leukemia. After Zimmerman in 1964 our case is the tenth published. A 20-year-old maghrebin male with documented acute lymphoblastic leukemia in relapse from two years was evaluated for sudden loss of vision Examination of the both fundus revealed a serous central retinal detachment. Our material consists in four fluorescein angiographies realized at 72 hours, 8th, 25th and 65th days. Initial aspect was numerous hyperfluorescent spots at the level of the pigment epithelium and following a bleb of serous detachment fullfiled of dye. The deep leakages were blown out after a week, when patient received anti-neoplasic drugs and corticoids. On the 25th Elschnig's spots appeared but a recurrence happened after two months. Unfortunately the eyes were not documented. Choroid is the most frequent ocular structure infiltrated in leukemia. On the other hand parallel may be done with Stern and Ernest experimentation (microspheres occlusion). Thus we considered that occurs infraction of choriocapillaris units by lymphoblasts or coagulopathy. Succed focal acute changes in Bruch's membrane and pigment epithelium.