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CASE REPORT
Year : 2018  |  Volume : 66  |  Issue : 6  |  Page : 872-876

Comparison of optical coherence tomography angiography and fundus fluorescein angiography features of retinal capillary hemangioblastoma


Department of Vitreo-Retina and Ocular Oncology, Sankara Eye Hospital, Bengaluru, Karnataka, India

Correspondence Address:
Dr. Mahesh Shanmugam
Department of Vitreo-Retina and Ocular Oncology, Sankara Eye Hospital, Varthur Road, Kundalahalli Gate, Bengaluru - 560 037, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijo.IJO_1199_17

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The aim of this study is to compare the optical coherence tomography angiography (OCTA) and fundus fluorescein angiography (FFA) features of retinal capillary hemangioblastoma (RCH). This is an observational case series of three patients with von Hippel–Lindau (VHL) disease and one patient with juxtapapillary RCH. All patients underwent FFA with a mydriatic fundus camera and OCTA with swept-source angio OCT. The FFA and OCTA characteristics of tumors were compared. In our series, FFA could identify tumors as small as the width of a third-order retinal artery, which was missed on clinical examination. OCTA identified these tiny tumors, but only those closer to the posterior pole. Both FFA and OCTA could identify the intrinsic vasculature and feeder vessel in juxtapapillary RCH. On OCTA, the tumors were better defined than in FFA. The depth of the lesion can be identified on OCTA. Feeder and the draining vessels could be identified precisely in OCTA than FFA, particularly in small tumors. OCTA can identify tumors in VHL missed on clinical examination. It can identify the feeder vessel and intrinsic vasculature of sessile juxtapapillary RCH and aids in its diagnosis. Tumors are better defined in OCTA than FFA due to the absence of leakage. However, FFA can identify nearly all the early tumors, but OCTA fails to image the peripheral tumors due to its smaller field and prolonged acquisition time. Technological advances and the development of wide-field OCTA in the future can be helpful in identifying all the unsuspected tumors in VHL disease.


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