| Summary: | Purpose: To describe a rare case of racemose hemangioma which developed spontaneous macular macroaneurysm (MA) rupture and vitreaous hemorrhage. Observations: A 29-year-old healthy asian female visited our hospital and a racemose hemangioma was found in the left eye. At presentation, the best corrected visual acuity (BCVA) was 30/20 in her left eye. At 9 years after the first visit, MA-like lesion was noted in the macular area. After that, vitreous and subretinal hemorrhage appeared in the left eye. The patient underwent simultaneous vitrectomy and cataract surgery, but vitreous re-hemorrhage occurred two days after the operation. To avoid re-hemorrhage, silicone oil (SO) tamponade was added in the second vitrectomy. Two years after the second operation, SO was removed and postoperative BCVA in the left eye was 20/200 without re-bleeding in the vitreous. Conclusions and Importance: Although retinal hemorrhages have been reported in the patients with a racemose hemangioma, in our case the macular MA rupture occurred at 9 years after the first visit. Congenital retinal arteriovenous anastomosis can show a change in vascular shape in some cases, thus it is important to observe carefully.
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