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Multimodal imaging in a case of a congenital retinal macrovessel associated with a retinal cavernous hemangioma: a
Walid Zbiba1, Issam Eddine Elleuch2, Sana Sayadi1
1Ophthalmology department, Mohamed Taher Maamouri hospital, Faculty of Medicine Tunis El Manar, 03 Rue Abou Zid El Hilali, 2010, Manouba, Tunisia.
Background:
To report the results of multimodal imaging in a case of a congenital retinal macrovessel associated with a retinal cavernous hemangioma.
Case Presentation:
A 52-year-old female patient presented with progressive vision loss in the right eye. BCVA was 8/20 in the right eye and 18/20 in the left eye. Fundus examination of the right eye showed an aberrant retinal macrovessel arising from the inferior temporal major vein. It crossed the foveal area and overstepped to the superior retina. A "brunch of grapes" shaped retinal lesions arised from the macrovessel. Fluorescein angiography showed saccular lesions that filled slowly during the venous phase and became brightly hyperfluorescent saccular caps. SS-OCT of the right eye revealed a highly back-scattering hyper-reflective vessel across the fovea with shadow effect and adhesions between the vitreous and the aberrant macrovessel. It also revealed hypo reflective saccules with hyperreflective borders located in the inner retina corresponding to the cavernous retinal hemangioma. Retinal pigment epithelium undulations and vascular dilations at the level of Haller's layer were observed in both eyes. Indocyanine green angiography revealed chroidal vascular dilatations in both eyes in the late phase. OCT-A showed the aberrant vessel emerging from the inferior temporal vein and splitting the foveal avascular zone horizontally. RCH appeared as small heterogeneous saccular flow areas associated with focal capillary hypo perfusion areas. Asymmetry and distorsion of the foveal avascular zone were also noticed. A diagnosis of retinal macrovessel associated with a retinal cavernous hemangioma was made.
Conclusions:
Congenital retinal macrovessels and retinal cavernous hemangioma are benign lesions. Their association is rare. Abnormal vascular development is likely to be responsible for their association. Swept source OCT and OCT angiography may be of a great contribution to better evaluate these retinal vascular disorders.
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